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80e55b1329
A user here noticed that the Python Value.string method did not work for Ada arrays. I tracked this down to an oddity in value_as_address -- namely, it calls coerce_array, but that function will not force array coercion when the language has c_style_arrays=false, as Ada does. This patch fixes the problem by changing c_get_string so that arrays take the "in GDB's memory" branch. The actual patch is somewhat more complicated than you might think, because the caller can request more array elements than the type allows. This is normal when the type is using the C struct hack. Tested on x86-64 Fedora 29. gdb/ChangeLog 2019-05-08 Tom Tromey <tromey@adacore.com> * c-lang.c (c_get_string): Handle non-C-style arrays. gdb/testsuite/ChangeLog 2019-05-08 Tom Tromey <tromey@adacore.com> * gdb.python/py-value.exp (test_value_in_inferior): Add Ada test.
614 lines
26 KiB
Plaintext
614 lines
26 KiB
Plaintext
# Copyright (C) 2008-2019 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This file is part of the GDB testsuite. It tests the mechanism
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# exposing values to Python.
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load_lib gdb-python.exp
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standard_testfile
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set has_argv0 [gdb_has_argv0]
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# Build inferior to language specification.
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# LANG is one of "c" or "c++".
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proc build_inferior {exefile lang} {
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global srcdir subdir srcfile testfile hex
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# Use different names for .o files based on the language.
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# For Fission, the debug info goes in foo.dwo and we don't want,
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# for example, a C++ compile to clobber the dwo of a C compile.
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# ref: http://gcc.gnu.org/wiki/DebugFission
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switch ${lang} {
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"c" { set filename ${testfile}.o }
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"c++" { set filename ${testfile}-cxx.o }
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}
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set objfile [standard_output_file $filename]
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${objfile}" object "debug $lang"] != ""
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|| [gdb_compile "${objfile}" "${exefile}" executable "debug $lang"] != "" } {
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untested "failed to compile in $lang mode"
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return -1
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}
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return 0
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}
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proc test_value_creation {} {
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global gdb_prompt
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global gdb_py_is_py3k
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gdb_py_test_silent_cmd "python i = gdb.Value (True)" "create boolean value" 1
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gdb_py_test_silent_cmd "python i = gdb.Value (5)" "create integer value" 1
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if { $gdb_py_is_py3k == 0 } {
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gdb_py_test_silent_cmd "python i = gdb.Value (5L)" "create long value" 1
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}
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gdb_py_test_silent_cmd "python l = gdb.Value(0xffffffff12345678)" "create large unsigned 64-bit value" 1
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if { $gdb_py_is_py3k == 0 } {
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gdb_test "python print long(l)" "18446744069720004216" "large unsigned 64-bit int conversion to python"
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} else {
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gdb_test "python print (int(l))" "18446744069720004216" "large unsigned 64-bit int conversion to python"
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}
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gdb_py_test_silent_cmd "python f = gdb.Value (1.25)" "create double value" 1
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gdb_py_test_silent_cmd "python a = gdb.Value ('string test')" "create 8-bit string value" 1
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gdb_test "python print (a)" "\"string test\"" "print 8-bit string"
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gdb_test "python print (a.__class__)" "<(type|class) 'gdb.Value'>" "verify type of 8-bit string"
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if { $gdb_py_is_py3k == 0 } {
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gdb_py_test_silent_cmd "python a = gdb.Value (u'unicode test')" "create unicode value" 1
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gdb_test "python print (a)" "\"unicode test\"" "print Unicode string"
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gdb_test "python print (a.__class__)" "<(type|class) 'gdb.Value'>" "verify type of unicode string"
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}
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# Test address attribute is None in a non-addressable value
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gdb_test "python print ('result = %s' % i.address)" "= None" "test address attribute in non-addressable value"
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}
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proc test_value_numeric_ops {} {
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global gdb_prompt
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global gdb_py_is_py3k
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gdb_py_test_silent_cmd "python i = gdb.Value (5)" "create first integer value" 0
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gdb_py_test_silent_cmd "python j = gdb.Value (2)" "create second integer value" 0
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gdb_py_test_silent_cmd "python f = gdb.Value (1.25)" "create first double value" 0
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gdb_py_test_silent_cmd "python g = gdb.Value (2.5)" "create second double value" 0
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gdb_test "python print ('result = ' + str(i+j))" " = 7" "add two integer values"
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gdb_test "python print ((i+j).__class__)" "<(type|class) 'gdb.Value'>" "verify type of integer add result"
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gdb_test "python print ('result = ' + str(f+g))" " = 3.75" "add two double values"
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gdb_test "python print ('result = ' + str(i-j))" " = 3" "subtract two integer values"
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gdb_test "python print ('result = ' + str(f-g))" " = -1.25" "subtract two double values"
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gdb_test "python print ('result = ' + str(i*j))" " = 10" "multiply two integer values"
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gdb_test "python print ('result = ' + str(f*g))" " = 3.125" "multiply two double values"
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gdb_test "python print ('result = ' + str(i/j))" " = 2" "divide two integer values"
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gdb_test "python print ('result = ' + str(f/g))" " = 0.5" "divide two double values"
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gdb_test "python print ('result = ' + str(i%j))" " = 1" "take remainder of two integer values"
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# Remainder of float is implemented in Python but not in GDB's value system.
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gdb_test "python print ('result = ' + str(i**j))" " = 25" "integer value raised to the power of another integer value"
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gdb_test "python print ('result = ' + str(g**j))" " = 6.25" "double value raised to the power of integer value"
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gdb_test "python print ('result = ' + str(-i))" " = -5" "negated integer value"
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gdb_test "python print ('result = ' + str(+i))" " = 5" "positive integer value"
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gdb_test "python print ('result = ' + str(-f))" " = -1.25" "negated double value"
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gdb_test "python print ('result = ' + str(+f))" " = 1.25" "positive double value"
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gdb_test "python print ('result = ' + str(abs(j-i)))" " = 3" "absolute of integer value"
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gdb_test "python print ('result = ' + str(abs(f-g)))" " = 1.25" "absolute of double value"
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# Test gdb.Value mixed with Python types.
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gdb_test "python print ('result = ' + str(i-1))" " = 4" "subtract integer value from python integer"
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gdb_test "python print ((i-1).__class__)" "<(type|class) 'gdb.Value'>" "verify type of mixed integer subtraction result"
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gdb_test "python print ('result = ' + str(f+1.5))" " = 2.75" "add double value with python float"
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gdb_test "python print ('result = ' + str(1-i))" " = -4" "subtract python integer from integer value"
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gdb_test "python print ('result = ' + str(1.5+f))" " = 2.75" "add python float with double value"
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# Conversion test.
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gdb_test "print evalue" " = TWO"
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gdb_test_no_output "python evalue = gdb.history (0)"
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gdb_test "python print (int (evalue))" "2"
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# Test pointer arithmethic
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# First, obtain the pointers
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gdb_test "print (void *) 2" ".*" ""
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gdb_test_no_output "python a = gdb.history (0)" ""
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gdb_test "print (void *) 5" ".*" ""
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gdb_test_no_output "python b = gdb.history (0)" ""
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gdb_test "python print(int(b))" "5" "convert pointer to int"
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if {!$gdb_py_is_py3k} {
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gdb_test "python print(long(b))" "5" "convert pointer to long"
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}
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gdb_test "python print ('result = ' + str(a+5))" " = 0x7( <.*>)?" "add pointer value with python integer"
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gdb_test "python print ('result = ' + str(b-2))" " = 0x3( <.*>)?" "subtract python integer from pointer value"
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gdb_test "python print ('result = ' + str(b-a))" " = 3" "subtract two pointer values"
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gdb_test "python print ('result = ' + 'result'\[gdb.Value(0)\])" \
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"result = r" "use value as string index"
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gdb_test "python print ('result = ' + str((1,2,3)\[gdb.Value(0)\]))" \
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"result = 1" "use value as tuple index"
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if {!$gdb_py_is_py3k} {
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gdb_test "python print ('result = ' + str(\[1,2,3\]\[gdb.Value(0)\]))" \
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"result = 1" "use value as array index"
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}
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gdb_test "python print('%x' % int(gdb.parse_and_eval('-1ull')))" \
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"f+" "int conversion respect type sign"
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if {!$gdb_py_is_py3k} {
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gdb_test "python print('%x' % long(gdb.parse_and_eval('-1ull')))" \
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"f+" "long conversion respect type sign"
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}
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# Test some invalid operations.
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gdb_test_multiple "python print ('result = ' + str(i+'foo'))" "catch error in python type conversion" {
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-re "Argument to arithmetic operation not a number or boolean.*$gdb_prompt $" {pass "catch error in python type conversion"}
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-re "result = .*$gdb_prompt $" {fail "catch error in python type conversion"}
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-re "$gdb_prompt $" {fail "catch error in python type conversion"}
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}
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gdb_test_multiple "python print ('result = ' + str(i+gdb.Value('foo')))" "catch throw of GDB error" {
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-re "Traceback.*$gdb_prompt $" {pass "catch throw of GDB error"}
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-re "result = .*$gdb_prompt $" {fail "catch throw of GDB error"}
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-re "$gdb_prompt $" {fail "catch throw of GDB error"}
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}
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}
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proc test_value_boolean {} {
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# First, define a useful function to test booleans.
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gdb_py_test_multiple "define function to test booleans" \
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"python" "" \
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"def test_bool (val):" "" \
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" if val:" "" \
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" print ('yay')" "" \
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" else:" "" \
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" print ('nay')" "" \
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"end" ""
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gdb_test "py test_bool (gdb.Value (True))" "yay" "check evaluation of true boolean value in expression"
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gdb_test "py test_bool (gdb.Value (False))" "nay" "check evaluation of false boolean value in expression"
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gdb_test "py test_bool (gdb.Value (5))" "yay" "check evaluation of true integer value in expression"
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gdb_test "py test_bool (gdb.Value (0))" "nay" "check evaluation of false integer value in expression"
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gdb_test "py test_bool (gdb.Value (5.2))" "yay" "check evaluation of true integer value in expression"
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gdb_test "py test_bool (gdb.Value (0.0))" "nay" "check evaluation of false integer value in expression"
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}
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proc test_value_compare {} {
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gdb_test "py print (gdb.Value (1) < gdb.Value (1))" "False" "less than, equal"
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gdb_test "py print (gdb.Value (1) < gdb.Value (2))" "True" "less than, less"
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gdb_test "py print (gdb.Value (2) < gdb.Value (1))" "False" "less than, greater"
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gdb_test "py print (gdb.Value (2) < None)" "False" "less than, None"
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gdb_test "py print (gdb.Value (1) <= gdb.Value (1))" "True" "less or equal, equal"
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gdb_test "py print (gdb.Value (1) <= gdb.Value (2))" "True" "less or equal, less"
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gdb_test "py print (gdb.Value (2) <= gdb.Value (1))" "False" "less or equal, greater"
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gdb_test "py print (gdb.Value (2) <= None)" "False" "less or equal, None"
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gdb_test "py print (gdb.Value (1) == gdb.Value (1))" "True" "equality of gdb.Values"
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gdb_test "py print (gdb.Value (1) == gdb.Value (2))" "False" "inequality of gdb.Values"
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gdb_test "py print (gdb.Value (1) == 1.0)" "True" "equality of gdb.Value with Python value"
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gdb_test "py print (gdb.Value (1) == 2)" "False" "inequality of gdb.Value with Python value"
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gdb_test "py print (gdb.Value (1) == None)" "False" "inequality of gdb.Value with None"
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gdb_test "py print (gdb.Value (1) != gdb.Value (1))" "False" "inequality, false"
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gdb_test "py print (gdb.Value (1) != gdb.Value (2))" "True" "inequality, true"
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gdb_test "py print (gdb.Value (1) != None)" "True" "inequality, None"
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gdb_test "py print (gdb.Value (1) > gdb.Value (1))" "False" "greater than, equal"
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gdb_test "py print (gdb.Value (1) > gdb.Value (2))" "False" "greater than, less"
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gdb_test "py print (gdb.Value (2) > gdb.Value (1))" "True" "greater than, greater"
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gdb_test "py print (gdb.Value (2) > None)" "True" "greater than, None"
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gdb_test "py print (gdb.Value (1) >= gdb.Value (1))" "True" "greater or equal, equal"
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gdb_test "py print (gdb.Value (1) >= gdb.Value (2))" "False" "greater or equal, less"
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gdb_test "py print (gdb.Value (2) >= gdb.Value (1))" "True" "greater or equal, greater"
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gdb_test "py print (gdb.Value (2) >= None)" "True" "greater or equal, None"
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}
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proc test_value_in_inferior {} {
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global gdb_prompt
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global testfile
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global gdb_py_is_py3k
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gdb_breakpoint [gdb_get_line_number "break to inspect struct and union"]
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gdb_continue_to_breakpoint "break to inspect struct and union"
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# Just get inferior variable s in the value history, available to python.
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gdb_test "print s" " = {a = 3, b = 5}" ""
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gdb_py_test_silent_cmd "python s = gdb.history (0)" "get value from history" 1
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gdb_test "python print ('result = ' + str(s\['a'\]))" " = 3" "access element inside struct using 8-bit string name"
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if { $gdb_py_is_py3k == 0 } {
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gdb_test "python print ('result = ' + str(s\[u'a'\]))" " = 3" "access element inside struct using unicode name"
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}
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# Test dereferencing the argv pointer
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# Just get inferior variable argv the value history, available to python.
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gdb_test "print argv" " = \\(char \\*\\*\\) 0x.*" ""
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gdb_py_test_silent_cmd "python argv = gdb.history (0)" "" 0
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gdb_py_test_silent_cmd "python arg0 = argv.dereference ()" "dereference value" 1
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# Check that the dereferenced value is sane
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global has_argv0
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set test "verify dereferenced value"
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if { $has_argv0 } {
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gdb_test_no_output "set print elements unlimited" ""
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gdb_test_no_output "set print repeats unlimited" ""
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gdb_test "python print (arg0)" "0x.*$testfile\"" $test
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} else {
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unsupported $test
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}
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# Smoke-test is_optimized_out attribute
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gdb_test "python print ('result = %s' % arg0.is_optimized_out)" "= False" "test is_optimized_out attribute"
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# Test address attribute
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gdb_test "python print ('result = %s' % arg0.address)" "= 0x\[\[:xdigit:\]\]+" "test address attribute"
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# Test displaying a variable that is temporarily at a bad address.
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# But if we can examine what's at memory address 0, then we'll also be
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# able to display it without error. Don't run the test in that case.
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set can_read_0 [is_address_zero_readable]
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# Test memory error.
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set test "parse_and_eval with memory error"
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if {$can_read_0} {
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untested $test
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} else {
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gdb_test "python print (gdb.parse_and_eval('*(int*)0'))" "gdb.MemoryError: Cannot access memory at address 0x0.*" $test
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}
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# Test Python lazy value handling
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set test "memory error and lazy values"
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if {$can_read_0} {
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untested $test
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} else {
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gdb_test "python inval = gdb.parse_and_eval('*(int*)0')"
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gdb_test "python print (inval.is_lazy)" "True"
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gdb_test "python inval2 = inval+1" "gdb.MemoryError: Cannot access memory at address 0x0.*" $test
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gdb_test "python inval.fetch_lazy ()" "gdb.MemoryError: Cannot access memory at address 0x0.*" $test
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}
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set argc_value [get_integer_valueof "argc" 0]
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gdb_test "python argc_lazy = gdb.parse_and_eval('argc')"
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gdb_test "python argc_notlazy = gdb.parse_and_eval('argc')"
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gdb_test "python argc_notlazy.fetch_lazy()"
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gdb_test "python print (argc_lazy.is_lazy)" "True"
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gdb_test "python print (argc_notlazy.is_lazy)" "False"
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gdb_test "print argc" " = $argc_value" "sanity check argc"
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gdb_test "python print (argc_lazy.is_lazy)" "\r\nTrue"
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gdb_test_no_output "set argc=[expr $argc_value + 1]" "change argc"
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gdb_test "python print (argc_notlazy)" "\r\n$argc_value"
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gdb_test "python print (argc_lazy)" "\r\n[expr $argc_value + 1]"
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gdb_test "python print (argc_lazy.is_lazy)" "False"
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# Test string fetches, both partial and whole.
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gdb_test "print st" "\"divide et impera\""
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gdb_py_test_silent_cmd "python st = gdb.history (0)" "get value from history" 1
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gdb_test "python print (st.string ())" "divide et impera" "Test string with no length"
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gdb_test "python print (st.string (length = -1))" "divide et impera" "test string (length = -1) is all of the string"
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gdb_test "python print (st.string (length = 6))" "divide"
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gdb_test "python print (\"---\"+st.string (length = 0)+\"---\")" "------" "test string (length = 0) is empty"
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gdb_test "python print (len(st.string (length = 0)))" "0" "test length is 0"
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# We choose Ada here to test a language where c_style_arrays is
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# false.
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gdb_test "set lang ada" \
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"Warning: the current language does not match this frame."
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gdb_test "python print (st.string ())" "divide et impera" \
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"Test string with no length in ada"
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gdb_test_no_output "set lang auto"
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# Fetch a string that has embedded nulls.
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gdb_test "print nullst" "\"divide\\\\000et\\\\000impera\".*"
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gdb_py_test_silent_cmd "python nullst = gdb.history (0)" "get value from history" 1
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gdb_test "python print (nullst.string ())" "divide" "test string to first null"
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# Python cannot print strings that contain the null (\0) character.
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# For the purposes of this test, use repr()
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gdb_py_test_silent_cmd "python nullst = nullst.string (length = 9)" "get string beyond null" 1
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gdb_test "python print (repr(nullst))" "u?'divide\\\\x00et'"
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# Test fetching a string longer than its declared (in C) size.
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# PR 16286
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gdb_py_test_silent_cmd "python xstr = gdb.parse_and_eval('xstr')" "get xstr" 1
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gdb_test "python print(xstr\['text'\].string (length = xstr\['length'\]))" "x{100}" \
|
|
"read string beyond declared size"
|
|
|
|
# However it shouldn't be possible to fetch past the end of a
|
|
# non-memory value.
|
|
gdb_py_test_silent_cmd "python str = '\"str\"'" "set up str variable" 1
|
|
gdb_test "python print (gdb.parse_and_eval (str).string (length = 10))" \
|
|
"gdb.error: Attempt to take address of value not located in memory.\r\nError while executing Python code."
|
|
}
|
|
|
|
proc test_inferior_function_call {} {
|
|
global gdb_prompt hex decimal
|
|
|
|
# Correct inferior call without arguments.
|
|
gdb_test "p/x fp1" " = $hex.*"
|
|
gdb_py_test_silent_cmd "python fp1 = gdb.history (0)" "get value from history" 1
|
|
gdb_test "python fp1 = fp1.dereference()" ""
|
|
gdb_test "python result = fp1()" ""
|
|
gdb_test "python print (result)" "void"
|
|
|
|
# Correct inferior call with arguments.
|
|
gdb_test "p/x fp2" " = $hex.*"
|
|
gdb_py_test_silent_cmd "python fp2 = gdb.history (0)" "get value from history" 1
|
|
gdb_test "python fp2 = fp2.dereference()" ""
|
|
gdb_test "python result2 = fp2(10,20)" ""
|
|
gdb_test "python print (result2)" "30"
|
|
|
|
# Incorrect to call an int value.
|
|
gdb_test "p i" " = $decimal.*"
|
|
gdb_py_test_silent_cmd "python i = gdb.history (0)" "get value from history" 1
|
|
gdb_test "python result3 = i()" ".*Value is not callable.*"
|
|
|
|
# Incorrect number of arguments.
|
|
gdb_test "p/x fp2" " = $hex.*"
|
|
gdb_py_test_silent_cmd "python fp3 = gdb.history (0)" "get value from history" 1
|
|
gdb_test "python fp3 = fp3.dereference()" ""
|
|
gdb_test "python result2 = fp3(10)" ".*Too few arguments in function call.*"
|
|
}
|
|
|
|
# A few objfile tests.
|
|
proc test_objfiles {} {
|
|
gdb_test "python\nok=False\nfor file in gdb.objfiles():\n if 'py-value' in file.filename:\n ok=True\nprint (ok)\nend" "True" \
|
|
"py-value in file.filename"
|
|
|
|
gdb_test "python print (gdb.objfiles()\[0\].pretty_printers)" "\\\[\\\]"
|
|
|
|
gdb_test "python gdb.objfiles()\[0\].pretty_printers = 0" \
|
|
"pretty_printers attribute must be a list.*Error while executing Python code."
|
|
}
|
|
|
|
proc test_value_after_death {} {
|
|
# Construct a type while the inferior is still running.
|
|
gdb_py_test_silent_cmd "python ptrtype = gdb.lookup_type('PTR')" \
|
|
"create PTR type" 1
|
|
|
|
# Kill the inferior and remove the symbols.
|
|
gdb_test "kill" "" "kill the inferior" \
|
|
"Kill the program being debugged. .y or n. $" \
|
|
"y"
|
|
gdb_test "file" "" "discard the symbols" \
|
|
"Discard symbol table from.*y or n. $" \
|
|
"y"
|
|
|
|
# Now create a value using that type. Relies on arg0, created by
|
|
# test_value_in_inferior.
|
|
gdb_py_test_silent_cmd "python castval = arg0.cast(ptrtype.pointer())" \
|
|
"cast arg0 to PTR" 1
|
|
|
|
# Make sure the type is deleted.
|
|
gdb_py_test_silent_cmd "python ptrtype = None" \
|
|
"delete PTR type" 1
|
|
|
|
# Now see if the value's type is still valid.
|
|
gdb_test "python print (castval.type)" "PTR ." \
|
|
"print value's type"
|
|
}
|
|
|
|
# Regression test for invalid subscript operations. The bug was that
|
|
# the type of the value was not being checked before allowing a
|
|
# subscript operation to proceed.
|
|
|
|
proc test_subscript_regression {exefile lang} {
|
|
# Start with a fresh gdb.
|
|
clean_restart ${exefile}
|
|
|
|
if ![runto_main ] then {
|
|
perror "couldn't run to breakpoint"
|
|
return
|
|
}
|
|
|
|
if {$lang == "c++"} {
|
|
gdb_breakpoint [gdb_get_line_number "break to inspect pointer by reference"]
|
|
gdb_continue_to_breakpoint "break to inspect pointer by reference"
|
|
|
|
gdb_py_test_silent_cmd "print rptr_int" \
|
|
"Obtain address" 1
|
|
gdb_py_test_silent_cmd "python rptr = gdb.history(0)" \
|
|
"Obtains value from GDB" 1
|
|
gdb_test "python print (rptr\[0\])" "2" "check pointer passed as reference"
|
|
|
|
# Just the most basic test of dynamic_cast -- it is checked in
|
|
# the C++ tests.
|
|
gdb_test "python print (bool(gdb.parse_and_eval('base').dynamic_cast(gdb.lookup_type('Derived').pointer())))" \
|
|
True
|
|
|
|
# Likewise.
|
|
gdb_test "python print (gdb.parse_and_eval('base').dynamic_type)" \
|
|
"Derived \[*\]"
|
|
gdb_test "python print (gdb.parse_and_eval('base_ref').dynamic_type)" \
|
|
"Derived \[&\]"
|
|
# A static type case.
|
|
gdb_test "python print (gdb.parse_and_eval('5').dynamic_type)" \
|
|
"int"
|
|
}
|
|
|
|
gdb_breakpoint [gdb_get_line_number "break to inspect struct and union"]
|
|
gdb_continue_to_breakpoint "break to inspect struct and union"
|
|
|
|
gdb_py_test_silent_cmd "python intv = gdb.Value(1)" \
|
|
"Create a value for subscript test" 1
|
|
gdb_py_test_silent_cmd "python stringv = gdb.Value(\"foo\")" \
|
|
"Create a value for subscript test" 1
|
|
|
|
# Try to access an int with a subscript. This should fail.
|
|
gdb_test "python print (intv)" "1" "baseline print of an int Python value"
|
|
gdb_test "python print (intv\[0\])" "gdb.error: Cannot subscript requested type.*" \
|
|
"Attempt to access an integer with a subscript"
|
|
|
|
# Try to access a string with a subscript. This should pass.
|
|
gdb_test "python print (stringv)" "foo." "baseline print of a string Python value"
|
|
gdb_test "python print (stringv\[0\])" "f." "attempt to access a string with a subscript"
|
|
|
|
# Try to access an int array via a pointer with a subscript. This should pass.
|
|
gdb_py_test_silent_cmd "print p" "Build pointer to array" 1
|
|
gdb_py_test_silent_cmd "python pointer = gdb.history(0)" "" 1
|
|
gdb_test "python print (pointer\[0\])" "1" "access array via pointer with int subscript"
|
|
gdb_test "python print (pointer\[intv\])" "2" "access array via pointer with value subscript"
|
|
|
|
# Try to access a single dimension array with a subscript to the
|
|
# result. This should fail.
|
|
gdb_test "python print (pointer\[intv\]\[0\])" "gdb.error: Cannot subscript requested type.*" \
|
|
"Attempt to access an integer with a subscript"
|
|
|
|
# Lastly, test subscript access to an array with multiple
|
|
# dimensions. This should pass.
|
|
gdb_py_test_silent_cmd "print {\"fu \",\"foo\",\"bar\"}" "Build array" 1
|
|
gdb_py_test_silent_cmd "python marray = gdb.history(0)" "" 1
|
|
gdb_test "python print (marray\[1\]\[2\])" "o." "test multiple subscript"
|
|
}
|
|
|
|
# A few tests of gdb.parse_and_eval.
|
|
proc test_parse_and_eval {} {
|
|
gdb_test "python print (gdb.parse_and_eval ('23'))" "23" \
|
|
"parse_and_eval constant test"
|
|
gdb_test "python print (gdb.parse_and_eval ('5 + 7'))" "12" \
|
|
"parse_and_eval simple expression test"
|
|
gdb_test "python print (type(gdb.parse_and_eval ('5 + 7')))" \
|
|
".(type|class) 'gdb.Value'."\
|
|
"parse_and_eval type test"
|
|
}
|
|
|
|
# Test that values are hashable.
|
|
proc test_value_hash {} {
|
|
gdb_py_test_multiple "Simple Python value dictionary" \
|
|
"python" "" \
|
|
"one = gdb.Value(1)" "" \
|
|
"two = gdb.Value(2)" "" \
|
|
"three = gdb.Value(3)" "" \
|
|
"vdict = {one:\"one str\",two:\"two str\",three:\"three str\"}" "" \
|
|
"end"
|
|
gdb_test "python print (vdict\[one\])" "one str" "test dictionary hash"
|
|
gdb_test "python print (vdict\[two\])" "two str" "test dictionary hash"
|
|
gdb_test "python print (vdict\[three\])" "three str" "test dictionary hash"
|
|
gdb_test "python print (one.__hash__() == hash(one))" "True" "test inbuilt hash"
|
|
}
|
|
|
|
proc test_float_conversion {} {
|
|
global gdb_py_is_py3k
|
|
gdb_test "python print(int(gdb.Value(0)))" "0"
|
|
gdb_test "python print(int(gdb.Value(2.5)))" "2"
|
|
if {!$gdb_py_is_py3k} {
|
|
gdb_test "python print(long(gdb.Value(0)))" "0"
|
|
gdb_test "python print(long(gdb.Value(2.5)))" "2"
|
|
}
|
|
gdb_test "python print(float(gdb.Value(2.5)))" "2\\.5"
|
|
gdb_test "python print(float(gdb.Value(0)))" "0\\.0"
|
|
}
|
|
|
|
proc test_value_from_buffer {} {
|
|
global gdb_prompt
|
|
global gdb_py_is_py3k
|
|
|
|
gdb_py_test_silent_cmd "python tp=gdb.lookup_type('int')" "look up int type" 0
|
|
gdb_py_test_silent_cmd "python size_a=gdb.parse_and_eval('sizeof(a)')" \
|
|
"find size of a" 0
|
|
gdb_py_test_silent_cmd "python size_a0=gdb.parse_and_eval('sizeof(a\[0\])')" \
|
|
"find size of element of a" 0
|
|
gdb_py_test_silent_cmd "python addr=gdb.parse_and_eval('&a')" \
|
|
"find address of a" 0
|
|
gdb_py_test_silent_cmd "python b=gdb.selected_inferior().read_memory(addr,size_a)" \
|
|
"read buffer from memory" 1
|
|
gdb_test "python v=gdb.Value(b,tp); print(v)" "1" \
|
|
"construct value from buffer"
|
|
gdb_test "python v=gdb.Value(b\[size_a0:\],tp); print(v)" "2" \
|
|
"convert 2nd elem of buffer to value"
|
|
gdb_test "python v=gdb.Value(b\[2*size_a0:\],tp); print(v)" "3" \
|
|
"convert 3rd elem of buffer to value"
|
|
gdb_test "python v=gdb.Value(b\[2*size_a0+1:\],tp); print(v)" \
|
|
"ValueError: Size of type is larger than that of buffer object\..*" \
|
|
"attempt to convert smaller buffer than size of type"
|
|
gdb_py_test_silent_cmd "python atp=tp.array(2) ; print(atp)" \
|
|
"make array type" 0
|
|
gdb_py_test_silent_cmd "python va=gdb.Value(b,atp)" \
|
|
"construct array value from buffer" 0
|
|
gdb_test "python print(va)" "\\{1, 2, 3\\}" "print array value"
|
|
gdb_test "python print(va\[0\])" "1" "print first array element"
|
|
gdb_test "python print(va\[1\])" "2" "print second array element"
|
|
gdb_test "python print(va\[2\])" "3" "print third array element"
|
|
gdb_test "python print(va\[3\])" "gdb\.error: no such vector element.*" \
|
|
"print out of bounds array element"
|
|
gdb_py_test_silent_cmd "python atpbig=tp.array(3)" "make bigger array type" 0
|
|
gdb_test "python vabig=gdb.Value(b,atpbig)" \
|
|
"ValueError: Size of type is larger than that of buffer object\..*" \
|
|
"attempt to construct large value with small buffer"
|
|
gdb_test "python v=gdb.Value(2048,tp)" \
|
|
"TypeError: Object must support the python buffer protocol\..*" \
|
|
"attempt to construct value from buffer with non-buffer object"
|
|
gdb_test "python v=gdb.Value(b,'int'); print(v)" \
|
|
"TypeError: type argument must be a gdb\.Type\..*" \
|
|
"attempt to construct value with string as type"
|
|
}
|
|
|
|
# Build C version of executable. C++ is built later.
|
|
if { [build_inferior "${binfile}" "c"] < 0 } {
|
|
return -1
|
|
}
|
|
|
|
# Start with a fresh gdb.
|
|
clean_restart ${binfile}
|
|
|
|
# Skip all tests if Python scripting is not enabled.
|
|
if { [skip_python_tests] } { continue }
|
|
|
|
test_value_creation
|
|
test_value_numeric_ops
|
|
test_value_boolean
|
|
test_value_compare
|
|
test_objfiles
|
|
test_parse_and_eval
|
|
test_value_hash
|
|
test_float_conversion
|
|
|
|
# The following tests require execution.
|
|
|
|
if ![runto_main] then {
|
|
fail "can't run to main"
|
|
return 0
|
|
}
|
|
|
|
test_value_in_inferior
|
|
test_value_from_buffer
|
|
test_inferior_function_call
|
|
test_value_after_death
|
|
|
|
# Test either C or C++ values.
|
|
|
|
test_subscript_regression "${binfile}" "c"
|
|
|
|
if ![skip_cplus_tests] {
|
|
if { [build_inferior "${binfile}-cxx" "c++"] < 0 } {
|
|
return -1
|
|
}
|
|
with_test_prefix "c++" {
|
|
test_subscript_regression "${binfile}-cxx" "c++"
|
|
}
|
|
}
|