forked from Imagelibrary/binutils-gdb
e7e7469e7a
Clang up to version 15 (current) adds macros that were defined in the command line or by "other means", according to the Dwarf specification, after the last DW_MACRO_end_file, instead of before the first DW_MACRO_start_file, as the specification dictates. When GDB reads the macros after the last file is closed, the macros never end up "in scope" and so we can't print them. This has been submitted as a bug to Clang developers (https://github.com/llvm/llvm-project/issues/54506), and PR macros/29034 was opened for GDB to keep track of this. Seeing as there is no expected date for it to be fixed, add a workaround for all current versions of Clang. The workaround detects when the main file would be closed and if the producer is Clang, and turns that operation into a noop, so we keep a reference to the current_file as those macros are read. A test case was added to confirm the functionality, and the KFAIL for running gdb.base/macro-source-path when using clang. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29034 Approved-By: Simon Marchi <simon.marchi@efficios.com>
83 lines
2.5 KiB
Plaintext
83 lines
2.5 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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# 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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# Compile a source file using different ways of passing the path to the
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# compiler. Then, verify that we can print a macro defined in that file.
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standard_testfile
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# If the host is remote, source files are uploaded to the host and compiled
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# there, but without the directory structure we expect, making the test
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# pointless. Skip the test in that case.
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if { [is_remote host] } {
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return
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}
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# Copy the source file at these locations in the output directory ($out):
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#
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# $out/cwd/macro-source-path.c
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# $out/other/macro-source-path.c
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#
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# Set the current working directory to $out/cwd, so that we can test compiling
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# using relative paths.
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set out_dir [standard_output_file ""]
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file mkdir $out_dir/cwd
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file mkdir $out_dir/other
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file copy -force $srcdir/$subdir/$srcfile $out_dir/cwd
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file copy -force $srcdir/$subdir/$srcfile $out_dir/other
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# Run one test.
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#
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# SRC is the path to the source file, to be passed to the compiler as-is.
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# NAME is the name of the test.
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proc test { src name } {
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with_test_prefix $name {
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set binfile $::out_dir/$name
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if { [gdb_compile $src $binfile executable {debug macros additional_flags=-DONE=1}] != "" } {
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fail "could not compile"
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return
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}
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clean_restart $binfile
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if { ![runto_main] } {
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return
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}
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# Print the macro that is defined on the command-line.
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gdb_test "print ONE" " = 1"
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# Print the macro that is defined in the main file.
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gdb_test "print TWO" " = 2"
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}
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}
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# When adding a test here, please consider adding an equivalent case to the test
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# of the same name in gdb.dwarf2.
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with_cwd "$out_dir/cwd" {
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test $testfile.c filename
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test ./$testfile.c dot-filename
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test ../cwd/$testfile.c dot-dot-filename
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test [file normalize $testfile.c] absolute-cwd
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test ../other/$testfile.c dot-dot-other
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test [file normalize ../other/$testfile.c] absolute-other
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}
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