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| author | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-01-25 14:14:31 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-01-25 14:14:31 +0100 |
| commit | ea81146c1515a35481103388a0e1e37aecab4933 (patch) | |
| tree | 11fe24146d9ba89ee194a119fd2b877cbc3a1395 | |
| parent | 188153b7df8fa47b3b9f9305a1bc27b22ca2d0c8 (diff) | |
| download | plan9front-ea81146c1515a35481103388a0e1e37aecab4933.tar.xz | |
jpg: check read count when reading png magic (harmless)
| -rw-r--r-- | sys/src/cmd/jpg/readpng.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/src/cmd/jpg/readpng.c b/sys/src/cmd/jpg/readpng.c index a4c54e89e..ef14e013f 100644 --- a/sys/src/cmd/jpg/readpng.c +++ b/sys/src/cmd/jpg/readpng.c @@ -388,8 +388,8 @@ readslave(Biobuf *b) ZlibW zw; buf = pngmalloc(IDATSIZE, 0); - Bread(b, buf, sizeof PNGmagic); - if(memcmp(PNGmagic, buf, sizeof PNGmagic) != 0) + if(Bread(b, buf, sizeof PNGmagic) != sizeof PNGmagic + || memcmp(PNGmagic, buf, sizeof PNGmagic) != 0) sysfatal("bad PNGmagic"); n = getchunk(b, type, buf, IDATSIZE); |