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# Copyright 2020-2023 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/> .
# This test covers some basic functionality for debugging mixed
# Fortran, C, and C++ applications. Features tested include examining
# the backtrace, and printing frame arguments in frames of different
# languages.
#
# One important aspect of this test is that we set the language in
# turn to auto, fortran, c, and c++, and carry out the full test in
# each case to ensure that trying to print objects or types from one
# language, while GDB's language is set to another, doesn't crash GDB.
require !skip_fortran_tests
standard_testfile mixed-lang-stack.c mixed-lang-stack.cpp mixed-lang-stack.f90
if {[prepare_for_testing_full "failed to prepare" \
[list ${binfile} {debug f90 additional_flags=-lstdc++} \
$srcfile {debug} \
$srcfile2 {debug c++} \
$srcfile3 {debug f90}]]} {
return -1
}
set have_index [exec_has_index_section $binfile]
# Runs the test program and examins the stack. LANG is a string, the
# value to pass to GDB's 'set language ...' command.
proc run_tests { lang } {
with_test_prefix "lang=${lang}" {
global binfile hex have_index
clean_restart ${binfile}
if ![runto_main] {
return -1
}
gdb_breakpoint "breakpt"
gdb_continue_to_breakpoint "breakpt"
if { $lang == "c" || $lang == "c++" } {
gdb_test "set language c" \
"Warning: the current language does not match this frame."
} else {
gdb_test_no_output "set language $lang"
}
# Check the backtrace.
set e_arg "\['\"\]abcdef\['\"\]"
set 1b_args "\[^\r\n\]+$e_arg\[^\r\n\]+"
set 1g_args "obj=\[^\r\n\]+"
set bt_stack \
[multi_line \
"#0\\s+breakpt \\(\\) at \[^\r\n\]+" \
"#1\\s+$hex in mixed_func_1h \\(\\) at \[^\r\n\]+" \
"#2\\s+$hex in mixed_func_1g \\($1g_args\\) at \[^\r\n\]+" \
"#3\\s+$hex in mixed_func_1f \\(\\) at \[^\r\n\]+" \
"#4\\s+$hex in mixed_func_1e \\(\\) at \[^\r\n\]+" \
"#5\\s+$hex in mixed_func_1d \\(\[^\r\n\]+\\) at \[^\r\n\]+" \
"#6\\s+$hex in mixed_func_1c \\(\[^\r\n\]+\\) at \[^\r\n\]+" \
"#7\\s+$hex in mixed_func_1b \\($1b_args\\) at \[^\r\n\]+" \
"#8\\s+$hex in mixed_func_1a \\(\\) at \[^\r\n\]+" \
"#9\\s+$hex in mixed_stack_main \\(\\) at \[^\r\n\]+" ]
set main_args "argc=1, argv=${hex}( \[^\r\n\]+)?"
set bt_stack_kfail \
[multi_line \
$bt_stack \
"#10\\s+$hex in main \\($main_args\\) at \[^\r\n\]+"]
gdb_test_multiple "bt -frame-arguments all" "" {
-re -wrap $bt_stack {
pass $gdb_test_name
}
-re -wrap $bt_stack_kfail {
if { $have_index } {
setup_kfail "gdb/24549" *-*-*
}
fail $gdb_test_name
}
}
# Check the language for frame #0.
gdb_test "info frame" "source language fortran\..*" \
"info frame in frame #0"
# Move up to the C++ frames and check the frame state, print a
# C++ object.
gdb_test "frame 2" "#2\\s+$hex in mixed_func_1g .*" \
"select frame #2"
gdb_test "info frame" "source language c\\+\\+\..*" \
"info frame in frame #2"
if { $lang == "fortran" } {
set obj_pattern " = \\( base_one = \\( num1 = 1, num2 = 2, num3 = 3 \\), base_two = \\( string = $hex 'Something in C\\+\\+\\\\000', val = 3.5 \\), xxx = 9, yyy = 10.5 \\)"
} else {
set obj_pattern " = \\{<base_one> = \\{num1 = 1, num2 = 2, num3 = 3\\}, <base_two> = \\{string = $hex \"Something in C\\+\\+\", val = 3.5\\}, xxx = 9, yyy = 10.5\\}"
}
gdb_test "print obj" "${obj_pattern}"
# Move up the stack a way, and check frame and the frame
# arguments.
gdb_test "frame 5" "#5\\s+$hex in mixed_func_1d .*" \
"select frame #5"
gdb_test "info frame" "source language fortran\..*" \
"info frame in frame #5"
gdb_test "up" "#6\\s+$hex in mixed_func_1c .*" \
"up to frame #6"
gdb_test "info frame" "source language c\..*" \
"info frame in frame #6"
if { $lang == "fortran" } {
set d_pattern "\\(4,5\\)"
set f_pattern "$hex 'abcdef\\\\000'"
} else {
set d_pattern "4 \\+ 5i"
set f_pattern "$hex \"abcdef\""
}
# When value-printing pointers in GDB, GDB will try and look for any
# associated symbol and print it after the pointer as "<SYMBOL>". For
# this test Intel and LLVM compilers move g to the .bss section, thus
# creating a symbol, while the GNU compiler stack keeps g purely on the
# stack.
set g_pattern "$hex\( <\[^\r\n\]+>\)?"
set args_pattern [multi_line \
"a = 1" \
"b = 2" \
"c = 3" \
"d = ${d_pattern}" \
"f = ${f_pattern}" \
"g = ${g_pattern}" ]
gdb_test "info args" $args_pattern \
"info args in frame #6"
if { $lang == "fortran" } {
set g_val_pattern " = \\( a = 1\\.5, b = 2\\.5 \\)"
} else {
set g_val_pattern " = \\{a = 1\\.5, b = 2\\.5\\}"
}
gdb_test "print *g" "${g_val_pattern}" \
"print object pointed to by g"
gdb_test "up" "#7\\s+$hex in mixed_func_1b .*" \
"up to frame #7"
gdb_test "info frame" "source language fortran\..*" \
"info frame in frame #7"
if { $lang == "c" || $lang == "c++" } {
set d_pattern "4 \\+ 5i"
set e_pattern "\"abcdef\""
set g_val_pattern "\{a = 1.5, b = 2.5\}"
} else {
set d_pattern "\\(4,5\\)"
set e_pattern "'abcdef'"
set g_val_pattern "\\( a = 1.5, b = 2.5 \\)"
}
set args_pattern [multi_line \
"a = 1" \
"b = 2" \
"c = 3" \
"d = ${d_pattern}" \
"e = ${e_pattern}" \
"g = ${g_val_pattern}" \
"_e = 6" ]
gdb_test "info args" $args_pattern \
"info args in frame #7"
}
}
run_tests "auto"
run_tests "fortran"
run_tests "c"
run_tests "c++"
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