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liblzma: Suppress -Wunused-function warning.
Clang 16.0.0 and earlier have a bug that the ifunc resolver function triggers the -Wunused-function warning. The resolver function is static and only "used" by the __attribute__((__ifunc()__)). At this time, the bug is still unresolved, but has been reported: https://github.com/llvm/llvm-project/issues/63957 This is not a problem in GCC.
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@ -441,6 +441,13 @@ is_clmul_supported(void)
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typedef uint64_t (*crc64_func_type)(
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typedef uint64_t (*crc64_func_type)(
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const uint8_t *buf, size_t size, uint64_t crc);
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const uint8_t *buf, size_t size, uint64_t crc);
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// Clang 16.0.0 and older has a bug where it marks the ifunc resolver
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// function as unused since it is static and never used outside of
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// __attribute__((__ifunc__())).
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#if defined(HAVE_FUNC_ATTRIBUTE_IFUNC) && defined(__clang__)
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wunused-function"
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#endif
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static crc64_func_type
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static crc64_func_type
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crc64_resolve(void)
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crc64_resolve(void)
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@ -448,6 +455,9 @@ crc64_resolve(void)
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return is_clmul_supported() ? &crc64_clmul : &crc64_generic;
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return is_clmul_supported() ? &crc64_clmul : &crc64_generic;
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}
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}
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#if defined(HAVE_FUNC_ATTRIBUTE_IFUNC) && defined(__clang__)
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# pragma GCC diagnostic pop
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#endif
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#ifndef HAVE_FUNC_ATTRIBUTE_IFUNC
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#ifndef HAVE_FUNC_ATTRIBUTE_IFUNC
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