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bfcd7c2160
Since ed01945057 "Make gdb_test's question non-optional if specified",
if the question and response parameters are given to gdb_test, the
framework enforces that GDB asks the question. Before this patch, tests
needed to use gdb_test_multiple to enforce this.
This patch updates the gdb.dwarf2/calling-convention.exp testcase to use
gdb_test to check that GDB asks a question. This replaces the more
complicated gdb_test_multiple based implementation.
Tested on x86_64-gnu-linux.
Change-Id: I7216e822ca68f2727e0450970097d74c27c432fe
100 lines
3.0 KiB
Plaintext
100 lines
3.0 KiB
Plaintext
# Copyright 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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# This testcase checks that if a function has the DW_AT_calling_convention
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# attribute with the value DW_CC_nocall, then GDB will not:
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# - call the function,
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# - try to access the value returned by the function when using the finish
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# command,
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# - force a user-provided return value when using the return command.
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#
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# In every case, GDB prints a message to the user indicating the issue. For
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# the return command, GDB asks the user to confirm if the specified value
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# should be forced.
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load_lib dwarf.exp
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# This test can only be run on targets which support DWARF-2 and use gas.
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if {![dwarf2_support]} {
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return 0
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}
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standard_testfile .c .S
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# First compile the .c file so we can ask GDB what is sizeof(int).
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if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
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untested "failed to compile"
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return -1
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}
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# Make some DWARF for the test.
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set asm_file [standard_output_file $srcfile2]
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Dwarf::assemble $asm_file {
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cu {} {
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compile_unit {
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{language @DW_LANG_C}
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{name "calling-convention"}
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} {
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declare_labels int_label
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int_label: base_type {
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{byte_size [get_sizeof "int" 4] sdata}
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{encoding @DW_ATE_signed}
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{name "int"}
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}
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subprogram {
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{MACRO_AT_func { foo }}
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{type :$int_label}
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{calling_convention @DW_CC_nocall}
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}
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subprogram {
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{MACRO_AT_func { main }}
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{type :$int_label}
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}
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}
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}
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}
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if { [prepare_for_testing "failed to prepare" ${testfile} \
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[list $srcfile $asm_file] {nodebug}] } {
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return -1
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}
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if {![runto_main]} {
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return -1
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}
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gdb_test "call foo ()" \
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"Cannot call the function 'foo' which does not follow the target calling convention."
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gdb_breakpoint "foo"
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gdb_continue_to_breakpoint "foo"
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gdb_test "return 35" \
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"Not confirmed" \
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"return 35" \
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[multi_line \
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"Function 'foo' does not follow the target calling convention\\." \
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"If you continue, setting the return value will probably lead to unpredictable behaviors\\." \
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"Make foo return now\\? \\(y or n\\) $"] \
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"n"
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gdb_test "finish" [multi_line \
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"Run till exit from #0 $hex in foo \\(\\)" \
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"warning: Function 'foo' does not follow the target calling convention, cannot determine its returned value\." \
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"$hex in main \\(\\)" \
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"Value returned has type: int. Cannot determine contents"]
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