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Check for NULL replacement in pcre2_substitute()

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Philip Hazel 2021-11-28 17:19:17 +00:00
parent 2a294ddadb
commit 7ab2769728
2 changed files with 6 additions and 4 deletions
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2
ChangeLog
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@ -32,6 +32,8 @@ substituting.
11. Add check for NULL subject to POSIX regexec() function.
12. Add check for NULL replacement to pcre2_substitute().
Version 10.39 29-October-2021
-----------------------------

8
src/pcre2_substitute.c
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@ -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) 2016-2020 University of Cambridge
New API code Copyright (c) 2016-2021 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
@ -261,9 +261,9 @@ if ((options & (PCRE2_PARTIAL_HARD|PCRE2_PARTIAL_SOFT)) != 0)
return PCRE2_ERROR_BADOPTION;
/* Validate length and find the end of the replacement. */
if (replacement == NULL && rlength > 0) return PCRE2_ERROR_NULL;
else if (rlength == PCRE2_ZERO_TERMINATED)
rlength = PRIV(strlen)(replacement);
if (replacement == NULL) return PCRE2_ERROR_NULL;
if (rlength == PCRE2_ZERO_TERMINATED) rlength = PRIV(strlen)(replacement);
repend = replacement + rlength;
/* Check for using a match that has already happened. Note that the subject