diff options
Diffstat (limited to 'vcs-svn/svndiff.c')
| -rw-r--r-- | vcs-svn/svndiff.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/vcs-svn/svndiff.c b/vcs-svn/svndiff.c index 1647c1a780..74c97c4543 100644 --- a/vcs-svn/svndiff.c +++ b/vcs-svn/svndiff.c @@ -77,8 +77,9 @@ static int error_short_read(struct line_buffer *input) static int read_chunk(struct line_buffer *delta, off_t *delta_len, struct strbuf *buf, size_t len) { + assert(*delta_len >= 0); strbuf_reset(buf); - if (len > *delta_len || + if (len > (uintmax_t) *delta_len || buffer_read_binary(delta, buf, len) != len) return error_short_read(delta); *delta_len -= buf->len; @@ -258,6 +259,7 @@ static int apply_window_in_core(struct window *ctx) static int apply_one_window(struct line_buffer *delta, off_t *delta_len, struct sliding_view *preimage, FILE *out) { + int rv = -1; struct window ctx = WINDOW_INIT(preimage); size_t out_len; size_t instructions_len; @@ -275,27 +277,26 @@ static int apply_one_window(struct line_buffer *delta, off_t *delta_len, if (apply_window_in_core(&ctx)) goto error_out; if (ctx.out.len != out_len) { - error("invalid delta: incorrect postimage length"); + rv = error("invalid delta: incorrect postimage length"); goto error_out; } if (write_strbuf(&ctx.out, out)) goto error_out; - window_release(&ctx); - return 0; + rv = 0; error_out: window_release(&ctx); - return -1; + return rv; } int svndiff0_apply(struct line_buffer *delta, off_t delta_len, struct sliding_view *preimage, FILE *postimage) { - assert(delta && preimage && postimage); + assert(delta && preimage && postimage && delta_len >= 0); if (read_magic(delta, &delta_len)) return -1; while (delta_len) { /* For each window: */ - off_t pre_off = pre_off; /* stupid GCC... */ + off_t pre_off = -1; size_t pre_len; if (read_offset(delta, &pre_off, &delta_len) || |