diff options
Diffstat (limited to 'src/util.h')
| -rw-r--r-- | src/util.h | 29 |
1 files changed, 17 insertions, 12 deletions
@@ -19,6 +19,16 @@ +#ifndef GCC_ONLY +# if defined(__GNUC__) && !defined(__clang__) +# define GCC_ONLY(...) __VA_ARGS__ +# else +# define GCC_ONLY(...) /* nothing */ +# endif +#endif + + + /** * Duplicate a memory segment * @@ -27,8 +37,8 @@ * @return The duplicate of the memory segment, * `NULL` on error */ -void* memdup(const void* src, size_t n); - +GCC_ONLY(__attribute__((malloc, nonnull))) +void* memdup(const void* restrict src, size_t n); /** * Read an entire file @@ -40,8 +50,8 @@ void* memdup(const void* src, size_t n); * @return The read content, plus a NUL byte at * the end (not counted in `*n`) */ -void* nread(int fd, size_t* n); - +GCC_ONLY(__attribute__((malloc))) +void* nread(int fd, size_t* restrict n); /** * Write an entire buffer to a file @@ -54,8 +64,7 @@ void* nread(int fd, size_t* n); * @return The number of written bytes, less than `n` * on error, cannot exceed `n` */ -size_t nwrite(int fd, const void* buf, size_t n); - +size_t nwrite(int fd, const void* restrict buf, size_t n); /** * Duplicate a file descriptor an make sure @@ -68,7 +77,6 @@ size_t nwrite(int fd, const void* buf, size_t n); */ int dup2atleast(int fd, int atleast); - /** * Perform a timed suspention of the process. * The process resumes when the timer expires, @@ -79,7 +87,6 @@ int dup2atleast(int fd, int atleast); */ void msleep(int ms); - /** * Check whether a NUL-terminated string is encoded in UTF-8 * @@ -87,8 +94,6 @@ void msleep(int ms); * @param allow_modified_nul Whether Modified UTF-8 is allowed, which allows a two-byte encoding for NUL * @return Zero if good, -1 on encoding error */ -#if defined(__GNUC__) -__attribute__((pure)) -#endif -int verify_utf8(const char* string, int allow_modified_nul); +GCC_ONLY(__attribute__((pure, nonnull))) +int verify_utf8(const char* restrict string, int allow_modified_nul); |