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Allow compiler to check buffer_appendf` arguments #18

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Allow compiler to check buffer_appendf` arguments #18

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3 changes: 3 additions & 0 deletions buffer.h
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,9 @@ buffer_prepend(buffer_t *self, char *str);
int
buffer_append(buffer_t *self, const char *str);

#ifdef __GNUC__
__attribute__((format(printf, 2, 3)))
#endif
int
buffer_appendf(buffer_t *self, const char *format, ...);

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