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f1e14eee66
When building trunk on openSUSE Leap 15.3 with system gcc 7.5.0, I run into:
...
In file included from ../bfd/bfd.h:46:0,
from gdb/defs.h:37,
from gdb/debuginfod-support.c:19:
gdb/debuginfod-support.c: In function ‘bool debuginfod_is_enabled()’:
gdb/../include/diagnostics.h:42:3: error: unknown option after \
‘#pragma GCC diagnostic’ kind [-Werror=pragmas]
_Pragma (DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored option))
^
gdb/../include/diagnostics.h:80:3: note: in expansion of macro \
‘DIAGNOSTIC_IGNORE’
DIAGNOSTIC_IGNORE ("-Wstringop-overread")
^~~~~~~~~~~~~~~~~
gdb/debuginfod-support.c:201:4: note: in expansion of macro \
‘DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD’
DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD
^
...
The problem is that the warning -Wstringop-overread has been introduced for
gcc 11, and we can only tell gcc to ignore if it knows about it.
Fix this by guarding the DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD definition in
diagnostics.c with '#if __GNUC__ >= 11'.
Tested on x86_64-linux, by completing a build.
129 lines
4.1 KiB
C
129 lines
4.1 KiB
C
/* Copyright (C) 2017-2022 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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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 DIAGNOSTICS_H
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#define DIAGNOSTICS_H
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/* If at all possible, fix the source rather than using these macros
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to silence warnings. If you do use these macros be aware that
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you'll need to condition their use on particular compiler versions,
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which can be done for gcc using ansidecl.h's GCC_VERSION macro.
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gcc versions between 4.2 and 4.6 do not allow pragma control of
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diagnostics inside functions, giving a hard error if you try to use
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the finer control available with later versions.
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gcc prior to 4.2 warns about diagnostic push and pop.
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The other macros have restrictions too, for example gcc-5, gcc-6
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and gcc-7 warn that -Wstringop-truncation is unknown, unless you
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also add DIAGNOSTIC_IGNORE ("-Wpragma"). */
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#ifdef __GNUC__
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# define DIAGNOSTIC_PUSH _Pragma ("GCC diagnostic push")
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# define DIAGNOSTIC_POP _Pragma ("GCC diagnostic pop")
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/* Stringification. */
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# define DIAGNOSTIC_STRINGIFY_1(x) #x
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# define DIAGNOSTIC_STRINGIFY(x) DIAGNOSTIC_STRINGIFY_1 (x)
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# define DIAGNOSTIC_IGNORE(option) \
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_Pragma (DIAGNOSTIC_STRINGIFY (GCC diagnostic ignored option))
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# define DIAGNOSTIC_ERROR(option) \
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_Pragma (DIAGNOSTIC_STRINGIFY (GCC diagnostic error option))
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#else
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# define DIAGNOSTIC_PUSH
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# define DIAGNOSTIC_POP
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# define DIAGNOSTIC_IGNORE(option)
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#endif
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#if defined (__clang__) /* clang */
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# define DIAGNOSTIC_IGNORE_SELF_MOVE DIAGNOSTIC_IGNORE ("-Wself-move")
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# define DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS \
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DIAGNOSTIC_IGNORE ("-Wdeprecated-declarations")
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# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER \
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DIAGNOSTIC_IGNORE ("-Wdeprecated-register")
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# if __has_warning ("-Wenum-compare-switch")
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# define DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES \
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DIAGNOSTIC_IGNORE ("-Wenum-compare-switch")
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# endif
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# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \
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DIAGNOSTIC_IGNORE ("-Wformat-nonliteral")
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# define DIAGNOSTIC_ERROR_SWITCH \
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DIAGNOSTIC_ERROR ("-Wswitch")
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#elif defined (__GNUC__) /* GCC */
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# if __GNUC__ >= 7
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# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER \
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DIAGNOSTIC_IGNORE ("-Wregister")
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# endif
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# define DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION \
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DIAGNOSTIC_IGNORE ("-Wstringop-truncation")
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# if __GNUC__ >= 11
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# define DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD \
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DIAGNOSTIC_IGNORE ("-Wstringop-overread")
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#endif
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# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL \
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DIAGNOSTIC_IGNORE ("-Wformat-nonliteral")
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/* GCC 4.8's "diagnostic push/pop" seems broken when using this, -Wswitch
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remains enabled at the error level even after a pop. Therefore, don't
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use it for GCC < 5. */
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# if __GNUC__ >= 5
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# define DIAGNOSTIC_ERROR_SWITCH DIAGNOSTIC_ERROR ("-Wswitch")
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# endif
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#endif
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#ifndef DIAGNOSTIC_IGNORE_SELF_MOVE
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# define DIAGNOSTIC_IGNORE_SELF_MOVE
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#endif
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#ifndef DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS
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# define DIAGNOSTIC_IGNORE_DEPRECATED_DECLARATIONS
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#endif
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#ifndef DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
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# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
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#endif
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#ifndef DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES
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# define DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES
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#endif
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#ifndef DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION
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# define DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION
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#endif
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#ifndef DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD
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# define DIAGNOSTIC_IGNORE_STRINGOP_OVERREAD
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#endif
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#ifndef DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
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# define DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
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#endif
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#ifndef DIAGNOSTIC_ERROR_SWITCH
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# define DIAGNOSTIC_ERROR_SWITCH
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#endif
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#endif /* DIAGNOSTICS_H */
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