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author | Qt Forward Merge Bot <qt_forward_merge_bot@qt-project.org> | 2018-10-20 23:00:27 +0000 |
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committer | The Qt Project <gerrit-noreply@qt-project.org> | 2018-10-20 23:19:30 +0000 |
commit | 9ef793ba9539b4eddb7893c0df9be6e211d9984f (patch) | |
tree | 7b9374b8dcc8cbbc3b92636b2029f1b55c5e3194 /src/3rdparty/pcre2/src/pcre2_serialize.c | |
parent | e631e900fd0cd7467b1dccb5fa401afdcd1e41a8 (diff) | |
parent | 7a252ac46780b6145084d8d5ca0549b2de3639cc (diff) |
Merge "Merge remote-tracking branch 'origin/5.11' into 5.12" into refs/staging/5.12
Diffstat (limited to 'src/3rdparty/pcre2/src/pcre2_serialize.c')
-rw-r--r-- | src/3rdparty/pcre2/src/pcre2_serialize.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/3rdparty/pcre2/src/pcre2_serialize.c b/src/3rdparty/pcre2/src/pcre2_serialize.c index d2cc603cbb..cec1a035d1 100644 --- a/src/3rdparty/pcre2/src/pcre2_serialize.c +++ b/src/3rdparty/pcre2/src/pcre2_serialize.c @@ -7,7 +7,7 @@ and semantics are as close as possible to those of the Perl 5 language. Written by Philip Hazel Original API code Copyright (c) 1997-2012 University of Cambridge - New API code Copyright (c) 2016-2017 University of Cambridge + New API code Copyright (c) 2016-2018 University of Cambridge ----------------------------------------------------------------------------- Redistribution and use in source and binary forms, with or without @@ -127,7 +127,25 @@ dst_bytes += tables_length; for (i = 0; i < number_of_codes; i++) { re = (const pcre2_real_code *)(codes[i]); - memcpy(dst_bytes, (char *)re, re->blocksize); + (void)memcpy(dst_bytes, (char *)re, re->blocksize); + + /* Certain fields in the compiled code block are re-set during + deserialization. In order to ensure that the serialized data stream is always + the same for the same pattern, set them to zero here. We can't assume the + copy of the pattern is correctly aligned for accessing the fields as part of + a structure. Note the use of sizeof(void *) in the second of these, to + specify the size of a pointer. If sizeof(uint8_t *) is used (tables is a + pointer to uint8_t), gcc gives a warning because the first argument is also a + pointer to uint8_t. Casting the first argument to (void *) can stop this, but + it didn't stop Coverity giving the same complaint. */ + + (void)memset(dst_bytes + offsetof(pcre2_real_code, memctl), 0, + sizeof(pcre2_memctl)); + (void)memset(dst_bytes + offsetof(pcre2_real_code, tables), 0, + sizeof(void *)); + (void)memset(dst_bytes + offsetof(pcre2_real_code, executable_jit), 0, + sizeof(void *)); + dst_bytes += re->blocksize; } |