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https://sourceware.org/git/binutils-gdb.git
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4a94e36819
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
79 lines
2.6 KiB
Plaintext
79 lines
2.6 KiB
Plaintext
# Copyright 2021-2022 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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# Check that GDB does not do excess accesses to the inferior memory
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# when fetching elements from an array in the C language.
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standard_testfile
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if {[prepare_for_testing "failed to prepare" $testfile $srcfile]} {
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return -1
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}
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if ![runto_main] then {
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return -1
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}
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# Load 'global_foo' into a history variable.
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gdb_test "p global_foo" "\\{f = 1, array = \\{1, 2, 3, 4, 5\\}\\}"
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gdb_test_no_output "set debug target 1"
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# Now print an array element from within 'global_foo', but accessed
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# via the history element. The history element should be non-lazy,
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# and so there should be no reason for GDB to fetch the array element
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# from the inferior memory, we should be able to grab the contents
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# directory from the history value.
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#
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# To check this we 'set debug target 1' (above), and then look for any
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# xfer_partial calls; there shouldn't be any.
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set saw_memory_access false
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gdb_test_multiple "p \$.array\[1\]" "" {
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-re "^p \\\$\\.array\\\[1\\\]\r\n" {
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exp_continue
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}
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-re "^->\[^\r\n\]+xfer_partial\[^\r\n\]+\r\n" {
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set saw_memory_access true
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exp_continue
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}
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-re "^->\[^\r\n\]+\r\n" {
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exp_continue
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}
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-re "^<-\[^\r\n\]+\r\n" {
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exp_continue
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}
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-re "^\[^\$\]\[^\r\n\]+\r\n" {
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exp_continue
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}
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-re "^\\\$${decimal} = 2\r\n$gdb_prompt " {
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gdb_assert { ! $saw_memory_access }
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}
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}
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gdb_test "set debug target 0" ".*"
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if { ! [skip_python_tests] } {
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gdb_test_no_output "python val = gdb.parse_and_eval('global_foo')"
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gdb_test "python print('val = %s' % val)" "val = \\{f = 1, array = \\{1, 2, 3, 4, 5\\}\\}"
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gdb_test "python print('val.is_lazy = %s' % val.is_lazy)" "val\\.is_lazy = False"
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# Grab an element from the array within VAL. The element should
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# immediately be non-lazy as the value contents can be copied
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# directly from VAL.
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gdb_test_no_output "python elem = val\['array'\]\[1\]"
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gdb_test "python print('elem.is_lazy = %s' % elem.is_lazy)" "elem\\.is_lazy = False"
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gdb_test "python print('elem = %s' % elem)" "elem = 2"
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}
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