strbuf: use st_add3() in strbuf_grow()
Simplify the code by calling st_add3() to do overflow checks instead of open-coding it. This changes the error message to include the offending summands, which can be helpful when tracking down the cause. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
René Scharfe committed
May 18, 2026 at 22:25 UTC
c13d0f7bd4e696d5db3345e00f763df23347b6ad
1 file changed
+2
-4
strbuf.c
+2
-4
index 3e04addc22..8610965d53 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -106,12 +106,10 @@ void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc)
void strbuf_grow(struct strbuf *sb, size_t extra)
{
int new_buf = !sb->alloc;
- if (unsigned_add_overflows(extra, 1) ||
- unsigned_add_overflows(sb->len, extra + 1))
- die("you want to use way too much memory");
+ size_t new_len = st_add3(sb->len, extra, 1);
if (new_buf)
sb->buf = NULL;
- ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
+ ALLOC_GROW(sb->buf, new_len, sb->alloc);
if (new_buf)
sb->buf[0] = '\0';
}