From cfe85ca5622509d5fe3a9981bf91e4fe098ac67b Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Sun, 6 Aug 2023 22:28:01 +0200 Subject: [PATCH] include/curl/mprintf.h: add __attribute__ for the prototypes - if gcc or clang is used - if __STDC_VERSION__ >= 199901L, which means greater than C90 - if not using mingw - if CURL_NO_FMT_CHECKS is not defined Closes #11589 --- include/curl/mprintf.h | 38 ++++++++++++++++++++++++++++---------- 1 file changed, 28 insertions(+), 10 deletions(-) diff --git a/include/curl/mprintf.h b/include/curl/mprintf.h index e652a6520e..dc5664bc53 100644 --- a/include/curl/mprintf.h +++ b/include/curl/mprintf.h @@ -32,18 +32,36 @@ extern "C" { #endif -CURL_EXTERN int curl_mprintf(const char *format, ...); -CURL_EXTERN int curl_mfprintf(FILE *fd, const char *format, ...); -CURL_EXTERN int curl_msprintf(char *buffer, const char *format, ...); +#if (defined(__GNUC__) || defined(__clang__)) && \ + defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \ + !defined(__MINGW32__) && !defined(CURL_NO_FMT_CHECKS) +#define CURL_TEMP_PRINTF(a,b) __attribute__ ((format(printf, a, b))) +#else +#define CURL_TEMP_PRINTF(a,b) +#endif + +CURL_EXTERN int curl_mprintf(const char *format, ...) CURL_TEMP_PRINTF(1, 2); +CURL_EXTERN int curl_mfprintf(FILE *fd, const char *format, ...) + CURL_TEMP_PRINTF(2, 3); +CURL_EXTERN int curl_msprintf(char *buffer, const char *format, ...) + CURL_TEMP_PRINTF(2, 3); CURL_EXTERN int curl_msnprintf(char *buffer, size_t maxlength, - const char *format, ...); -CURL_EXTERN int curl_mvprintf(const char *format, va_list args); -CURL_EXTERN int curl_mvfprintf(FILE *fd, const char *format, va_list args); -CURL_EXTERN int curl_mvsprintf(char *buffer, const char *format, va_list args); + const char *format, ...) CURL_TEMP_PRINTF(3, 4); +CURL_EXTERN int curl_mvprintf(const char *format, va_list args) + CURL_TEMP_PRINTF(1, 0); +CURL_EXTERN int curl_mvfprintf(FILE *fd, const char *format, va_list args) + CURL_TEMP_PRINTF(2, 0); +CURL_EXTERN int curl_mvsprintf(char *buffer, const char *format, va_list args) + CURL_TEMP_PRINTF(2, 0); CURL_EXTERN int curl_mvsnprintf(char *buffer, size_t maxlength, - const char *format, va_list args); -CURL_EXTERN char *curl_maprintf(const char *format, ...); -CURL_EXTERN char *curl_mvaprintf(const char *format, va_list args); + const char *format, va_list args) + CURL_TEMP_PRINTF(3, 0); +CURL_EXTERN char *curl_maprintf(const char *format, ...) + CURL_TEMP_PRINTF(1, 2); +CURL_EXTERN char *curl_mvaprintf(const char *format, va_list args) + CURL_TEMP_PRINTF(1, 0); + +#undef CURL_TEMP_PRINTF #ifdef __cplusplus } /* end of extern "C" */ -- 2.47.3