From 0d8cc1670cdb6c4acdad1e2fcd92cb378873355b Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Wed, 27 Jun 2001 06:15:50 +0000 Subject: Fix a type promotion bug discivered and analyzed by Alan Modra , which caused false checksum errors --- libbb/unzip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'libbb') 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 */ -- cgit v1.2.3