diff options
Diffstat (limited to 'thirdparty/pcre2/src/pcre2_substitute.c')
| -rw-r--r-- | thirdparty/pcre2/src/pcre2_substitute.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/thirdparty/pcre2/src/pcre2_substitute.c b/thirdparty/pcre2/src/pcre2_substitute.c index 8b2c369ccc..edbb78c6d7 100644 --- a/thirdparty/pcre2/src/pcre2_substitute.c +++ b/thirdparty/pcre2/src/pcre2_substitute.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) 2016-2021 University of Cambridge + New API code Copyright (c) 2016-2022 University of Cambridge ----------------------------------------------------------------------------- Redistribution and use in source and binary forms, with or without @@ -259,16 +259,16 @@ PCRE2_UNSET, so as not to imply an offset in the replacement. */ if ((options & (PCRE2_PARTIAL_HARD|PCRE2_PARTIAL_SOFT)) != 0) return PCRE2_ERROR_BADOPTION; - -/* Validate length and find the end of the replacement. A NULL replacement of + +/* Validate length and find the end of the replacement. A NULL replacement of zero length is interpreted as an empty string. */ -if (replacement == NULL) +if (replacement == NULL) { if (rlength != 0) return PCRE2_ERROR_NULL; - replacement = (PCRE2_SPTR)""; - } - + replacement = (PCRE2_SPTR)""; + } + if (rlength == PCRE2_ZERO_TERMINATED) rlength = PRIV(strlen)(replacement); repend = replacement + rlength; @@ -282,8 +282,9 @@ replacement_only = ((options & PCRE2_SUBSTITUTE_REPLACEMENT_ONLY) != 0); match data block. We create an internal match_data block in two cases: (a) an external one is not supplied (and we are not starting from an existing match); (b) an existing match is to be used for the first substitution. In the latter -case, we copy the existing match into the internal block. This ensures that no -changes are made to the existing match data block. */ +case, we copy the existing match into the internal block, except for any cached +heap frame size and pointer. This ensures that no changes are made to the +external match data block. */ if (match_data == NULL) { @@ -309,6 +310,8 @@ else if (use_existing_match) if (internal_match_data == NULL) return PCRE2_ERROR_NOMEMORY; memcpy(internal_match_data, match_data, offsetof(pcre2_match_data, ovector) + 2*pairs*sizeof(PCRE2_SIZE)); + internal_match_data->heapframes = NULL; + internal_match_data->heapframes_size = 0; match_data = internal_match_data; } @@ -328,9 +331,9 @@ scb.ovector = ovector; if (subject == NULL) { - if (length != 0) return PCRE2_ERROR_NULL; + if (length != 0) return PCRE2_ERROR_NULL; subject = (PCRE2_SPTR)""; - } + } /* Find length of zero-terminated subject */ |