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backport MBEDTLS_MAYBE_UNUSED

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
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Dave Rodgman
2024-01-04 11:37:17 +00:00
parent e42c23569b
commit 52c294acb4
1 changed files with 27 additions and 0 deletions
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27
library/common.h
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@ -350,4 +350,31 @@ static inline const unsigned char *mbedtls_buffer_offset_const(
#define MBEDTLS_STATIC_ASSERT(expr, msg) #define MBEDTLS_STATIC_ASSERT(expr, msg)
#endif #endif
/* Suppress compiler warnings for unused functions and variables. */
#if !defined(MBEDTLS_MAYBE_UNUSED) && defined(__has_attribute)
# if __has_attribute(unused)
# define MBEDTLS_MAYBE_UNUSED __attribute__((unused))
# endif
#endif
#if !defined(MBEDTLS_MAYBE_UNUSED) && defined(__GNUC__)
# define MBEDTLS_MAYBE_UNUSED __attribute__((unused))
#endif
#if !defined(MBEDTLS_MAYBE_UNUSED) && defined(__IAR_SYSTEMS_ICC__) && defined(__VER__)
/* IAR does support __attribute__((unused)), but only if the -e flag (extended language support)
* is given; the pragma always works.
* Unfortunately the pragma affects the rest of the file where it is used, but this is harmless.
* Check for version 5.2 or later - this pragma may be supported by earlier versions, but I wasn't
* able to find documentation).
*/
# if (__VER__ >= 5020000)
# define MBEDTLS_MAYBE_UNUSED _Pragma("diag_suppress=Pe177")
# endif
#endif
#if !defined(MBEDTLS_MAYBE_UNUSED) && defined(_MSC_VER)
# define MBEDTLS_MAYBE_UNUSED __pragma(warning(suppress:4189))
#endif
#if !defined(MBEDTLS_MAYBE_UNUSED)
# define MBEDTLS_MAYBE_UNUSED
#endif
#endif /* MBEDTLS_LIBRARY_COMMON_H */ #endif /* MBEDTLS_LIBRARY_COMMON_H */