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>
36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
/* DWARF macro support for GDB.
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Copyright (C) 2003-2022 Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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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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#ifndef GDB_DWARF2_MACRO_H
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#define GDB_DWARF2_MACRO_H
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struct buildsym_compunit;
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extern void dwarf_decode_macros (dwarf2_per_objfile *per_objfile,
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buildsym_compunit *builder,
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const dwarf2_section_info *section,
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const struct line_header *lh,
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unsigned int offset_size,
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unsigned int offset,
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dwarf2_section_info *str_section,
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dwarf2_section_info *str_offsets_section,
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gdb::optional<ULONGEST> str_offsets_base,
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int section_is_gnu, struct dwarf2_cu *cu);
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#endif /* GDB_DWARF2_MACRO_H */
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