diff options
author | Eric Sandall | 2022-06-13 22:17:34 -0700 |
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committer | Eric Sandall | 2022-06-13 22:17:34 -0700 |
commit | 89fd6c5ec73be3a8a220285dd6949aa8781884da (patch) | |
tree | 57cc59e6a71567795fb65ed99324844699090c9a /archive-libs/zlib/0002-fix-crc32.patch | |
parent | 4b54b98ebeef721a8fd4a5f1b5cc61ac9a096e7f (diff) |
zlib: Fix CRC32 https://github.com/madler/zlib/issues/613
PATCHLEVEL++
Apply 0002-fix-crc32.patch
2.12 breaks CRC32 for programs like java
See https://github.com/madler/zlib/issues/613
Diffstat (limited to 'archive-libs/zlib/0002-fix-crc32.patch')
-rw-r--r-- | archive-libs/zlib/0002-fix-crc32.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/archive-libs/zlib/0002-fix-crc32.patch b/archive-libs/zlib/0002-fix-crc32.patch new file mode 100644 index 0000000000..9546308cc0 --- /dev/null +++ b/archive-libs/zlib/0002-fix-crc32.patch @@ -0,0 +1,53 @@ +# From https://github.com/madler/zlib/commit/ec3df00224d4b396e2ac6586ab5d25f673caa4c2.patch +From ec3df00224d4b396e2ac6586ab5d25f673caa4c2 Mon Sep 17 00:00:00 2001 +From: Mark Adler <madler@alumni.caltech.edu> +Date: Wed, 30 Mar 2022 11:14:53 -0700 +Subject: [PATCH] Correct incorrect inputs provided to the CRC functions. + +The previous releases of zlib were not sensitive to incorrect CRC +inputs with bits set above the low 32. This commit restores that +behavior, so that applications with such bugs will continue to +operate as before. +--- + crc32.c | 8 ++++---- + 1 file changed, 4 insertions(+), 4 deletions(-) + +diff --git a/crc32.c b/crc32.c +index a1bdce5c2..451887bc7 100644 +--- a/crc32.c ++++ b/crc32.c +@@ -630,7 +630,7 @@ unsigned long ZEXPORT crc32_z(crc, buf, len) + #endif /* DYNAMIC_CRC_TABLE */ + + /* Pre-condition the CRC */ +- crc ^= 0xffffffff; ++ crc = (~crc) & 0xffffffff; + + /* Compute the CRC up to a word boundary. */ + while (len && ((z_size_t)buf & 7) != 0) { +@@ -749,7 +749,7 @@ unsigned long ZEXPORT crc32_z(crc, buf, len) + #endif /* DYNAMIC_CRC_TABLE */ + + /* Pre-condition the CRC */ +- crc ^= 0xffffffff; ++ crc = (~crc) & 0xffffffff; + + #ifdef W + +@@ -1077,7 +1077,7 @@ uLong ZEXPORT crc32_combine64(crc1, crc2, len2) + #ifdef DYNAMIC_CRC_TABLE + once(&made, make_crc_table); + #endif /* DYNAMIC_CRC_TABLE */ +- return multmodp(x2nmodp(len2, 3), crc1) ^ crc2; ++ return multmodp(x2nmodp(len2, 3), crc1) ^ (crc2 & 0xffffffff); + } + + /* ========================================================================= */ +@@ -1112,5 +1112,5 @@ uLong crc32_combine_op(crc1, crc2, op) + uLong crc2; + uLong op; + { +- return multmodp(op, crc1) ^ crc2; ++ return multmodp(op, crc1) ^ (crc2 & 0xffffffff); + } + |