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| author | Eric Andersen <andersen@codepoet.org> | 2001-06-27 06:15:50 +0000 |
|---|---|---|
| committer | Eric Andersen <andersen@codepoet.org> | 2001-06-27 06:15:50 +0000 |
| commit | 0d8cc1670cdb6c4acdad1e2fcd92cb378873355b (patch) | |
| tree | dbbf9f3fc4c9c3641ed07a33edee33bf7226e27e | |
| parent | 4b6b5e4314e6b760bdc0cf51dfb1f01896f3b6d0 (diff) | |
| download | busybox-0d8cc1670cdb6c4acdad1e2fcd92cb378873355b.tar.gz | |
Fix a type promotion bug discivered and analyzed by Alan Modra
<amodra@bigpond.net.au>, which caused false checksum errors
| -rw-r--r-- | archival/libunarchive/decompress_unzip.c | 2 | ||||
| -rw-r--r-- | archival/libunarchive/unzip.c | 2 | ||||
| -rw-r--r-- | libbb/unzip.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/archival/libunarchive/decompress_unzip.c b/archival/libunarchive/decompress_unzip.c index 7de28930a..40b8af427 100644 --- a/archival/libunarchive/decompress_unzip.c +++ b/archival/libunarchive/decompress_unzip.c @@ -997,7 +997,7 @@ extern int unzip(FILE *l_in_file, FILE *l_out_file) fread(buf, 1, 8, in_file); /* Validate decompression - crc */ - if (((buf[0] | (buf[1] << 8)) |((buf[2] | (buf[3] << 8)) << 16)) != (crc ^ 0xffffffffL)) { + if ((unsigned int)((buf[0] | (buf[1] << 8)) |((buf[2] | (buf[3] << 8)) << 16)) != (crc ^ 0xffffffffL)) { error_msg("invalid compressed data--crc error"); } /* Validate decompression - size */ diff --git a/archival/libunarchive/unzip.c b/archival/libunarchive/unzip.c index 7de28930a..40b8af427 100644 --- a/archival/libunarchive/unzip.c +++ b/archival/libunarchive/unzip.c @@ -997,7 +997,7 @@ extern int unzip(FILE *l_in_file, FILE *l_out_file) fread(buf, 1, 8, in_file); /* Validate decompression - crc */ - if (((buf[0] | (buf[1] << 8)) |((buf[2] | (buf[3] << 8)) << 16)) != (crc ^ 0xffffffffL)) { + if ((unsigned int)((buf[0] | (buf[1] << 8)) |((buf[2] | (buf[3] << 8)) << 16)) != (crc ^ 0xffffffffL)) { error_msg("invalid compressed data--crc error"); } /* Validate decompression - size */ diff --git a/libbb/unzip.c b/libbb/unzip.c index 7de28930a..40b8af427 100644 --- a/libbb/unzip.c +++ b/libbb/unzip.c @@ -997,7 +997,7 @@ extern int unzip(FILE *l_in_file, FILE *l_out_file) fread(buf, 1, 8, in_file); /* Validate decompression - crc */ - if (((buf[0] | (buf[1] << 8)) |((buf[2] | (buf[3] << 8)) << 16)) != (crc ^ 0xffffffffL)) { + if ((unsigned int)((buf[0] | (buf[1] << 8)) |((buf[2] | (buf[3] << 8)) << 16)) != (crc ^ 0xffffffffL)) { error_msg("invalid compressed data--crc error"); } /* Validate decompression - size */ |