diff options
Diffstat (limited to 'buffer.c')
| -rw-r--r-- | buffer.c | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -182,9 +182,10 @@ buf_sub (struct buffer *buf, int size, bool prepend) /* * printf append to a buffer with overflow check */ -void +bool buf_printf (struct buffer *buf, const char *format, ...) { + int ret = false; if (buf_defined (buf)) { va_list arglist; @@ -193,13 +194,17 @@ buf_printf (struct buffer *buf, const char *format, ...) if (cap > 0) { + int stat; va_start (arglist, format); - vsnprintf ((char *)ptr, cap, format, arglist); + stat = vsnprintf ((char *)ptr, cap, format, arglist); va_end (arglist); *(buf->data + buf->capacity - 1) = 0; /* windows vsnprintf needs this */ buf->len += (int) strlen ((char *)ptr); + if (stat >= 0 && stat < cap) + ret = true; } } + return ret; } /* |