d01b425e5d
Clang since r369414 (clang-10) can now check -Wimplicit-fallthrough for C code, and use the GNU C style attribute to denote fallthrough. Move the test from header only to autoconf. The previous test used brittle version detection which did not work for newer clang that supported this feature. The attribute has to be its own statement, hence the added `;`. It also can only precede case statements, so the final cases should be explicitly terminated with break statements. Fixes commit3d29d11ac2("Clean compilation -Wextra") Link:1e0affb6e5Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
108 lines
3.8 KiB
C
108 lines
3.8 KiB
C
#ifndef JEMALLOC_INTERNAL_MACROS_H
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#define JEMALLOC_INTERNAL_MACROS_H
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#ifdef JEMALLOC_DEBUG
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# define JEMALLOC_ALWAYS_INLINE static inline
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#else
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# define JEMALLOC_ALWAYS_INLINE JEMALLOC_ATTR(always_inline) static inline
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#endif
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#ifdef _MSC_VER
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# define inline _inline
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#endif
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#define UNUSED JEMALLOC_ATTR(unused)
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#define ZU(z) ((size_t)z)
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#define ZD(z) ((ssize_t)z)
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#define QU(q) ((uint64_t)q)
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#define QD(q) ((int64_t)q)
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#define KZU(z) ZU(z##ULL)
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#define KZD(z) ZD(z##LL)
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#define KQU(q) QU(q##ULL)
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#define KQD(q) QI(q##LL)
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#ifndef __DECONST
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# define __DECONST(type, var) ((type)(uintptr_t)(const void *)(var))
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#endif
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#if !defined(JEMALLOC_HAS_RESTRICT) || defined(__cplusplus)
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# define restrict
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#endif
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/* Various function pointers are static and immutable except during testing. */
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#ifdef JEMALLOC_JET
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# define JET_MUTABLE
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#else
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# define JET_MUTABLE const
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#endif
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#define JEMALLOC_VA_ARGS_HEAD(head, ...) head
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#define JEMALLOC_VA_ARGS_TAIL(head, ...) __VA_ARGS__
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/* Diagnostic suppression macros */
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#if defined(_MSC_VER) && !defined(__clang__)
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# define JEMALLOC_DIAGNOSTIC_PUSH __pragma(warning(push))
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# define JEMALLOC_DIAGNOSTIC_POP __pragma(warning(pop))
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# define JEMALLOC_DIAGNOSTIC_IGNORE(W) __pragma(warning(disable:W))
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# define JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS
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# define JEMALLOC_DIAGNOSTIC_IGNORE_TYPE_LIMITS
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# define JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
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# define JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS
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/* #pragma GCC diagnostic first appeared in gcc 4.6. */
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#elif (defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && \
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(__GNUC_MINOR__ > 5)))) || defined(__clang__)
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/*
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* The JEMALLOC_PRAGMA__ macro is an implementation detail of the GCC and Clang
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* diagnostic suppression macros and should not be used anywhere else.
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*/
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# define JEMALLOC_PRAGMA__(X) _Pragma(#X)
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# define JEMALLOC_DIAGNOSTIC_PUSH JEMALLOC_PRAGMA__(GCC diagnostic push)
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# define JEMALLOC_DIAGNOSTIC_POP JEMALLOC_PRAGMA__(GCC diagnostic pop)
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# define JEMALLOC_DIAGNOSTIC_IGNORE(W) \
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JEMALLOC_PRAGMA__(GCC diagnostic ignored W)
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/*
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* The -Wmissing-field-initializers warning is buggy in GCC versions < 5.1 and
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* all clang versions up to version 7 (currently trunk, unreleased). This macro
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* suppresses the warning for the affected compiler versions only.
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*/
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# if ((defined(__GNUC__) && !defined(__clang__)) && (__GNUC__ < 5)) || \
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defined(__clang__)
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# define JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS \
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JEMALLOC_DIAGNOSTIC_IGNORE("-Wmissing-field-initializers")
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# else
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# define JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS
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# endif
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# define JEMALLOC_DIAGNOSTIC_IGNORE_TYPE_LIMITS \
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JEMALLOC_DIAGNOSTIC_IGNORE("-Wtype-limits")
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# define JEMALLOC_DIAGNOSTIC_IGNORE_UNUSED_PARAMETER \
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JEMALLOC_DIAGNOSTIC_IGNORE("-Wunused-parameter")
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# if defined(__GNUC__) && !defined(__clang__) && (__GNUC__ >= 7)
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# define JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN \
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JEMALLOC_DIAGNOSTIC_IGNORE("-Walloc-size-larger-than=")
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# else
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# define JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
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# endif
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# define JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS \
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JEMALLOC_DIAGNOSTIC_PUSH \
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JEMALLOC_DIAGNOSTIC_IGNORE_UNUSED_PARAMETER
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#else
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# define JEMALLOC_DIAGNOSTIC_PUSH
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# define JEMALLOC_DIAGNOSTIC_POP
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# define JEMALLOC_DIAGNOSTIC_IGNORE(W)
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# define JEMALLOC_DIAGNOSTIC_IGNORE_MISSING_STRUCT_FIELD_INITIALIZERS
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# define JEMALLOC_DIAGNOSTIC_IGNORE_TYPE_LIMITS
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# define JEMALLOC_DIAGNOSTIC_IGNORE_ALLOC_SIZE_LARGER_THAN
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# define JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS
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#endif
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/*
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* Disables spurious diagnostics for all headers. Since these headers are not
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* included by users directly, it does not affect their diagnostic settings.
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*/
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JEMALLOC_DIAGNOSTIC_DISABLE_SPURIOUS
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#endif /* JEMALLOC_INTERNAL_MACROS_H */
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