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Update bundled PCRE2-library to version 10.23

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Some manual changes done to the library were lost with this update.
They will be added in the next commit.
This commit is contained in:
Esa Korhonen
2017-05-29 15:31:42 +03:00
parent 7231563937
commit 36af74cb25
218 changed files with 49218 additions and 26130 deletions
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50
pcre2/doc/pcre2serialize.3
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@ -1,4 +1,4 @@
.TH PCRE2SERIALIZE 3 "20 January 2015" "PCRE2 10.10"
.TH PCRE2SERIALIZE 3 "24 May 2016" "PCRE2 10.22"
.SH NAME
PCRE2 - Perl-compatible regular expressions (revised API)
.SH "SAVING AND RE-USING PRECOMPILED PCRE2 PATTERNS"
@ -22,12 +22,22 @@ If you are running an application that uses a large number of regular
expression patterns, it may be useful to store them in a precompiled form
instead of having to compile them every time the application is run. However,
if you are using the just-in-time optimization feature, it is not possible to
save and reload the JIT data, because it is position-dependent. In addition,
the host on which the patterns are reloaded must be running the same version of
PCRE2, with the same code unit width, and must also have the same endianness,
pointer width and PCRE2_SIZE type. For example, patterns compiled on a 32-bit
system using PCRE2's 16-bit library cannot be reloaded on a 64-bit system, nor
can they be reloaded using the 8-bit library.
save and reload the JIT data, because it is position-dependent. The host on
which the patterns are reloaded must be running the same version of PCRE2, with
the same code unit width, and must also have the same endianness, pointer width
and PCRE2_SIZE type. For example, patterns compiled on a 32-bit system using
PCRE2's 16-bit library cannot be reloaded on a 64-bit system, nor can they be
reloaded using the 8-bit library.
.
.
.SH "SECURITY CONCERNS"
.rs
.sp
The facility for saving and restoring compiled patterns is intended for use
within individual applications. As such, the data supplied to
\fBpcre2_serialize_decode()\fP is expected to be trusted data, not data from
arbitrary external sources. There is only some simple consistency checking, not
complete validation of what is being re-loaded.
.
.
.SH "SAVING COMPILED PATTERNS"
@ -129,20 +139,26 @@ is filled with those that fit, and the remainder are ignored. The yield of the
function is the number of decoded patterns, or one of the following negative
error codes:
.sp
PCRE2_ERROR_BADDATA second argument is zero or less
PCRE2_ERROR_BADMAGIC mismatch of id bytes in the data
PCRE2_ERROR_BADMODE mismatch of variable unit size or PCRE2 version
PCRE2_ERROR_MEMORY memory allocation failed
PCRE2_ERROR_NULL first or third argument is NULL
PCRE2_ERROR_BADDATA second argument is zero or less
PCRE2_ERROR_BADMAGIC mismatch of id bytes in the data
PCRE2_ERROR_BADMODE mismatch of code unit size or PCRE2 version
PCRE2_ERROR_BADSERIALIZEDDATA other sanity check failure
PCRE2_ERROR_MEMORY memory allocation failed
PCRE2_ERROR_NULL first or third argument is NULL
.sp
PCRE2_ERROR_BADMAGIC may mean that the data is corrupt, or that it was compiled
on a system with different endianness.
.P
Decoded patterns can be used for matching in the usual way, and must be freed
by calling \fBpcre2_code_free()\fP as normal. A single copy of the character
tables is used by all the decoded patterns. A reference count is used to
by calling \fBpcre2_code_free()\fP. However, be aware that there is a potential
race issue if you are using multiple patterns that were decoded from a single
byte stream in a multithreaded application. A single copy of the character
tables is used by all the decoded patterns and a reference count is used to
arrange for its memory to be automatically freed when the last pattern is
freed.
freed, but there is no locking on this reference count. Therefore, if you want
to call \fBpcre2_code_free()\fP for these patterns in different threads, you
must arrange your own locking, and ensure that \fBpcre2_code_free()\fP cannot
be called by two threads at the same time.
.P
If a pattern was processed by \fBpcre2_jit_compile()\fP before being
serialized, the JIT data is discarded and so is no longer available after a
@ -165,6 +181,6 @@ Cambridge, England.
.rs
.sp
.nf
Last updated: 20 January 2015
Copyright (c) 1997-2015 University of Cambridge.
Last updated: 24 May 2016
Copyright (c) 1997-2016 University of Cambridge.
.fi