strbuf: strbuf_read_file() should return ssize_t

It is currently declared to return int, which could overflow for
large files.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/strbuf.c b/strbuf.c
index 88cafd4a70..b4da9f5d05 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -481,9 +481,10 @@ int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term)
 	return 0;
 }
 
-int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
+ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
 {
-	int fd, len;
+	int fd;
+	ssize_t len;
 
 	fd = open(path, O_RDONLY);
 	if (fd < 0)