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-rw-r--r--include/curl/mprintf.h38
1 files changed, 28 insertions, 10 deletions
diff --git a/include/curl/mprintf.h b/include/curl/mprintf.h
index e652a65..dc5664b 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" */