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Have GCC catch errors in format strings

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svn:r332
This commit is contained in:
Nick Mathewson 2003-06-17 22:14:44 +00:00
parent 5fd033a8e8
commit 6965a4696c
1 changed files with 11 additions and 2 deletions
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13
src/common/log.h
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@ -9,11 +9,20 @@
#include <syslog.h>
/* magic to make GCC check for proper format strings. */
#ifdef __GNUC__
#define CHECK_PRINTF(formatIdx, firstArg) \
__attribute__ ((format (printf, formatIdx, firstArg)))
#else
#define CHECK_PRINTF(formatIdx, firstArg)
#endif
/* Outputs a message to stdout and also logs the same message using syslog. */
void log(int severity, const char *format, ...);
void log(int severity, const char *format, ...) CHECK_PRINTF(2,3);
#ifdef __GNUC__
void _log_fn(int severity, const char *funcname, const char *format, ...);
void _log_fn(int severity, const char *funcname, const char *format, ...)
CHECK_PRINTF(3,4);
#define log_fn(severity, args...) \
_log_fn(severity, __PRETTY_FUNCTION__, args)
#else