From a8f3e2219c237661a30b54fe23d58e055f0b548c Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Wed, 26 Sep 2007 02:26:06 -0700 Subject: [PATCH] strbuf_setlen(): do not barf on setting length of an empty buffer to 0 strbuf_setlen() expect to be able to NUL terminate the buffer, but a completely empty strbuf could have an empty buffer with 0 allocation; both the assert() and the assignment for NUL termination would fail. Signed-off-by: Junio C Hamano --- strbuf.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/strbuf.h b/strbuf.h index 567e2d17d..3b19de304 100644 --- a/strbuf.h +++ b/strbuf.h @@ -65,14 +65,17 @@ static inline void strbuf_swap(struct strbuf *a, struct strbuf *b) { static inline size_t strbuf_avail(struct strbuf *sb) { return sb->alloc ? sb->alloc - sb->len - 1 : 0; } + +extern void strbuf_grow(struct strbuf *, size_t); + static inline void strbuf_setlen(struct strbuf *sb, size_t len) { - assert (len < sb->alloc); + if (!sb->alloc) + strbuf_grow(sb, 0); + assert(len < sb->alloc); sb->len = len; sb->buf[len] = '\0'; } -extern void strbuf_grow(struct strbuf *, size_t); - /*----- content related -----*/ extern void strbuf_rtrim(struct strbuf *); -- 2.30.2