103 lines
3.8 KiB
C
103 lines
3.8 KiB
C
/* NetHack 3.7 warnings.h $NHDT-Date: 1596498562 2020/08/03 23:49:22 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.24 $ */
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/* Copyright (c) Michael Allison, 2021. */
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#ifndef WARNINGS_H
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#define WARNINGS_H
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/*
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* If ENABLE_WARNING_PRAGMAS is defined, the checks for various
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* compilers is activated.
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*
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* If a suitable compiler is found, STDC_Pragma_AVAILABLE will be defined.
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* When STDC_Pragma_AVAILABLE is not defined, these are defined as no-ops:
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* DISABLE_WARNING_UNREACHABLE_CODE
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* DISABLE_WARNING_CONDEXPR_IS_CONSTANT
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* DISABLE_WARNING_FORMAT_NONLITERAL
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* ...
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* RESTORE_WARNINGS
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* RESTORE_WARNING_CONDEXPR_IS_CONSTANT
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* RESTORE_WARNING_FORMAT_NONLITERAL
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*
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*/
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#if !defined(DISABLE_WARNING_PRAGMAS)
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#if defined(__STDC_VERSION__)
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#if __STDC_VERSION__ >= 199901L
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#define ACTIVATE_WARNING_PRAGMAS
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#endif /* __STDC_VERSION >= 199901L */
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#endif /* __STDC_VERSION */
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#if defined(_MSC_VER)
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#ifndef ACTIVATE_WARNING_PRAGMAS
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#define ACTIVATE_WARNING_PRAGMAS
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#endif
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#endif
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#if defined(__GNUC__) || defined(__clang__)
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#if defined(__cplusplus)
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#ifndef ACTIVATE_WARNING_PRAGMAS
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#define ACTIVATE_WARNING_PRAGMAS
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#endif
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#endif /* __cplusplus */
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#endif /* __GNUC__ || __clang__ */
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#ifdef ACTIVATE_WARNING_PRAGMAS
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#if defined(__clang__)
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#define DISABLE_WARNING_UNREACHABLE_CODE \
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_Pragma("clang diagnostic push") \
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_Pragma("clang diagnostic ignored \"-Wunreachable-code\"")
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#define DISABLE_WARNING_FORMAT_NONLITERAL \
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_Pragma("clang diagnostic push") \
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_Pragma("clang diagnostic ignored \"-Wformat-nonliteral\"")
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#define DISABLE_WARNING_CONDEXPR_IS_CONSTANT
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#define RESTORE_WARNING_CONDEXPR_IS_CONSTANT
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#define RESTORE_WARNING_FORMAT_NONLITERAL _Pragma("clang diagnostic pop")
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#define RESTORE_WARNINGS _Pragma("clang diagnostic pop")
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#define STDC_Pragma_AVAILABLE
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#elif defined(__GNUC__)
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/* unlike in clang, -Wunreachable-code does not function in later versions of gcc */
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#define DISABLE_WARNING_UNREACHABLE_CODE \
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_Pragma("GCC diagnostic push") \
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_Pragma("GCC diagnostic ignored \"-Wunreachable-code\"")
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#define DISABLE_WARNING_FORMAT_NONLITERAL \
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_Pragma("GCC diagnostic push") \
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_Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
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#define DISABLE_WARNING_CONDEXPR_IS_CONSTANT
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#define RESTORE_WARNING_CONDEXPR_IS_CONSTANT
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#define RESTORE_WARNING_FORMAT_NONLITERAL _Pragma("GCC diagnostic pop")
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#define RESTORE_WARNINGS _Pragma("GCC diagnostic pop")
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#define STDC_Pragma_AVAILABLE
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#elif defined(_MSC_VER)
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#define DISABLE_WARNING_UNREACHABLE_CODE \
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_Pragma("warning( push )") \
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_Pragma("warning( disable : 4702 )")
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#define DISABLE_WARNING_FORMAT_NONLITERAL \
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_Pragma("warning( push )") \
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_Pragma("warning( disable : 4774 )")
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#define DISABLE_WARNING_CONDEXPR_IS_CONSTANT \
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_Pragma("warning( push )") \
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_Pragma("warning( disable : 4127 )")
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#define RESTORE_WARNING_CONDEXPR_IS_CONSTANT _Pragma("warning( pop )")
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#define RESTORE_WARNING_FORMAT_NONLITERAL _Pragma("warning( pop )")
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#define RESTORE_WARNINGS _Pragma("warning( pop )")
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#define STDC_Pragma_AVAILABLE
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#endif /* various compiler detections */
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#endif /* ACTIVATE_WARNING_PRAGMAS */
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#else /* DISABLE_WARNING_PRAGMAS */
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#if defined(STDC_Pragma_AVAILABLE)
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#undef STDC_Pragma_AVAILABLE
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#endif
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#endif /* DISABLE_WARNING_PRAGMAS */
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#if !defined(STDC_Pragma_AVAILABLE)
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#define DISABLE_WARNING_UNREACHABLE_CODE
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#define DISABLE_WARNING_FORMAT_NONLITERAL
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#define DISABLE_WARNING_CONDEXPR_IS_CONSTANT
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#define RESTORE_WARNING_CONDEXPR_IS_CONSTANT
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#define RESTORE_WARNING_FORMAT_NONLITERAL
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#define RESTORE_WARNINGS
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#endif
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#endif /* WARNINGS_H */
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