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8b5a7a6e8c
clang has a too aggressive (or broken, depends on how you want to see it) -Wunused-function warning, which is triggered by the functions defined by DEF_VEC_* but not used in the current source file. Normally, it won't warn about unused static inline functions defined in header files, because it's expected that a source file won't use all functions defined in a header file it includes. However, if the DEF_VEC_* macro is used in a source file, it considers those functions as defined in the source file, which leads it to think that we should remove those functions. It is therefore missing a check to see whether those functions are resulting from macro expansion. A bug already exists for that: https://bugs.llvm.org//show_bug.cgi?id=22712 It's quite easy to silence this warning in a localized way, that is in the DEF_VEC_* macros. gdb/ChangeLog: * common/diagnostics.h: Define macros for GCC. (DIAGNOSTIC_IGNORE_UNUSED_FUNCTION): New macro. * common/vec.h: Include diagnostics.h. (DIAGNOSTIC_IGNORE_UNUSED_VEC_FUNCTION): New macro. (DEF_VEC_I, DEF_VEC_P, DEF_VEC_O): Ignore -Wunused-function warning.
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/* Copyright (C) 2017 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 COMMON_DIAGNOSTICS_H
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#define COMMON_DIAGNOSTICS_H
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#include "common/preprocessor.h"
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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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# define DIAGNOSTIC_IGNORE(option) \
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_Pragma (STRINGIFY (GCC diagnostic ignored 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_REGISTER \
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DIAGNOSTIC_IGNORE ("-Wdeprecated-register")
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# define DIAGNOSTIC_IGNORE_UNUSED_FUNCTION \
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DIAGNOSTIC_IGNORE ("-Wunused-function")
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#elif defined (__GNUC__) /* GCC */
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# define DIAGNOSTIC_IGNORE_SELF_MOVE
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# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
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# define DIAGNOSTIC_IGNORE_UNUSED_FUNCTION \
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DIAGNOSTIC_IGNORE ("-Wunused-function")
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#else /* Other compilers */
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# define DIAGNOSTIC_IGNORE_SELF_MOVE
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# define DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
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# define DIAGNOSTIC_IGNORE_UNUSED_FUNCTION
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#endif
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#endif /* COMMON_DIAGNOSTICS_H */
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