From f8080fb7a44b0a3a9699c188015106bc4b16076f Mon Sep 17 00:00:00 2001 From: Tom de Vries Date: Fri, 26 Nov 2021 20:46:37 +0100 Subject: [gdb/testsuite] Add gdb.base/include-main.exp The test-case gdb.ada/dgopt.exp uses the -gnatD switch, in combination with -gnatG. This causes the source file $src/gdb/testsuite/gdb.ada/dgopt/x.adb to be expanded into $build/gdb/testsuite/outputs/gdb.ada/dgopt/x.adb.dg, and the debug information should refer to the x.adb.dg file. That is the case for the .debug_line part: ... The Directory Table is empty. The File Name Table (offset 0x1c): Entry Dir Time Size Name 1 0 0 0 x.adb.dg ... but not for the .debug_info part: ... <11> DW_AT_name : $src/gdb/testsuite/gdb.ada/dgopt/x.adb <15> DW_AT_comp_dir : $build/gdb/testsuite/outputs/gdb.ada/dgopt ... Filed as PR gcc/103436. In C we can generate similar debug information, using a source file that does not contain any code, but includes another one that does: ... $ cat gdb/testsuite/gdb.base/include-main.c #include "main.c" ... such that in the .debug_line part we have: ... The Directory Table (offset 0x1c): 1 /home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.base The File Name Table (offset 0x57): Entry Dir Time Size Name 1 1 0 0 main.c ... and in the .debug_info part: ... <11> DW_AT_name : $src/gdb/testsuite/gdb.base/include-main.c <15> DW_AT_comp_dir : $build/gdb/testsuite ... Add a C test-case that mimics gdb.ada/dgopt.exp, that is: - generate debug info as described above, - issue a list of a line in include-main.c, while the corresponding CU is not expanded yet. Tested on x86_64-linux. --- gdb/testsuite/gdb.base/include-main.c | 18 +++++++++++++ gdb/testsuite/gdb.base/include-main.exp | 47 +++++++++++++++++++++++++++++++++ gdb/testsuite/gdb.base/main.c | 22 +++++++++++++++ 3 files changed, 87 insertions(+) create mode 100644 gdb/testsuite/gdb.base/include-main.c create mode 100644 gdb/testsuite/gdb.base/include-main.exp create mode 100644 gdb/testsuite/gdb.base/main.c (limited to 'gdb/testsuite') diff --git a/gdb/testsuite/gdb.base/include-main.c b/gdb/testsuite/gdb.base/include-main.c new file mode 100644 index 0000000..ef5ac0a --- /dev/null +++ b/gdb/testsuite/gdb.base/include-main.c @@ -0,0 +1,18 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2021 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 . */ + +#include "main.c" diff --git a/gdb/testsuite/gdb.base/include-main.exp b/gdb/testsuite/gdb.base/include-main.exp new file mode 100644 index 0000000..5e5e949 --- /dev/null +++ b/gdb/testsuite/gdb.base/include-main.exp @@ -0,0 +1,47 @@ +# Copyright 2021 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 . + +# C test-case that mimics gdb.ada/dgopt.exp. + +standard_testfile .c main.c + +if { [build_executable "failed to prepare" $testfile $srcfile {debug}] } { + return -1 +} + +clean_restart + +# Set language explicitly, to avoid expanding the include-main.c CU for the +# language lookup (this is currently not required, but may be after +# integration of the no-more-psym branch). +# This to make sure that the source file lookup we do later triggers the +# symtab expansion. +gdb_test_no_output "set language c" + +gdb_load $binfile + +# Verify that no CU was expanded. +gdb_test_no_output "maint info symtab" + +# List a line in include-main.c. The tricky bit is that there's no code in +# include-main.c, so the file should not occur in the .debug_line info. +# GDB needs to find the file based on the CU's DW_AT_name/DW_AT_comp_dir. +set line [gdb_get_line_number "include" $srcfile] +gdb_test "list $srcfile:$line" "$line\[ \t\]*#include \"main.c\"" + +# For completeness, also try to list a line in the file that does contain +# code. +set line [gdb_get_line_number "main" $srcfile2] +gdb_test "list $srcfile2:$line" "$line\[ \t\]*main \\(void\\)\r\n.*" diff --git a/gdb/testsuite/gdb.base/main.c b/gdb/testsuite/gdb.base/main.c new file mode 100644 index 0000000..bfe52c0 --- /dev/null +++ b/gdb/testsuite/gdb.base/main.c @@ -0,0 +1,22 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2021 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 . */ + +int +main (void) +{ + return 0; +} -- cgit v1.1