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rerere: Fix use of an empty strbuf.buf

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The code incorrectly assumed that strbuf.buf is always an
allocated piece of memory that has NUL at offset strbuf.len.
That assumption does not hold for a freshly initialized empty
strbuf.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2007-09-26 23:34:01 -07:00
parent 1dffb8fa80
commit b4833a2c62
1 changed files with 4 additions and 2 deletions
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6
builtin-rerere.c
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@ -113,8 +113,10 @@ static int handle_file(const char *path,
fputs(">>>>>>>\n", out);
}
if (sha1) {
SHA1_Update(&ctx, one.buf, one.len + 1);
SHA1_Update(&ctx, two.buf, two.len + 1);
SHA1_Update(&ctx, one.buf ? one.buf : "",
one.len + 1);
SHA1_Update(&ctx, two.buf ? two.buf : "",
two.len + 1);
}
strbuf_reset(&one);
strbuf_reset(&two);