diff options
| -rw-r--r-- | git-compat-util.h | 3 | ||||
| -rw-r--r-- | wrapper.c | 16 |
2 files changed, 19 insertions, 0 deletions
diff --git a/git-compat-util.h b/git-compat-util.h index f649e81f11..348b9dcc1c 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -744,6 +744,9 @@ static inline size_t xsize_t(off_t len) return (size_t)len; } +__attribute__((format (printf, 3, 4))) +extern int xsnprintf(char *dst, size_t max, const char *fmt, ...); + /* in ctype.c, for kwset users */ extern const unsigned char tolower_trans_tbl[256]; @@ -621,6 +621,22 @@ char *xgetcwd(void) return strbuf_detach(&sb, NULL); } +int xsnprintf(char *dst, size_t max, const char *fmt, ...) +{ + va_list ap; + int len; + + va_start(ap, fmt); + len = vsnprintf(dst, max, fmt, ap); + va_end(ap); + + if (len < 0) + die("BUG: your snprintf is broken"); + if (len >= max) + die("BUG: attempt to snprintf into too-small buffer"); + return len; +} + static int write_file_v(const char *path, int fatal, const char *fmt, va_list params) { |