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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>
49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
/* Producer string parsers for GDB.
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Copyright (C) 2012-2022 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 PRODUCER_H
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#define PRODUCER_H
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/* Check for GCC >= 4.x according to the symtab->producer string. Return minor
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version (x) of 4.x in such case. If it is not GCC or it is GCC older than
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4.x return -1. If it is GCC 5.x or higher return INT_MAX. */
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extern int producer_is_gcc_ge_4 (const char *producer);
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/* Returns nonzero if the given PRODUCER string is GCC and sets the MAJOR
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and MINOR versions when not NULL. Returns zero if the given PRODUCER
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is NULL or it isn't GCC. */
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extern int producer_is_gcc (const char *producer, int *major, int *minor);
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/* Check for Intel compilers >= 19.0. */
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extern bool producer_is_icc_ge_19 (const char *producer);
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/* Returns true if the given PRODUCER string is Intel or false
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otherwise. Sets the MAJOR and MINOR versions when not NULL. */
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extern bool producer_is_icc (const char *producer, int *major, int *minor);
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/* Returns true if the given PRODUCER string is LLVM (clang/flang) or
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false otherwise.*/
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extern bool producer_is_llvm (const char *producer);
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/* Returns true if the given PRODUCER string is clang, false otherwise.
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Sets MAJOR and MINOR accordingly, if not NULL. */
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extern bool producer_is_clang (const char *producer, int *major, int *minor);
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#endif
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