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|ID||Category||Severity||Reproducibility||Date Submitted||Last Update|
|0007785||[Squeak] VM||minor||always||08-12-13 18:19||08-28-13 18:04|
|Summary||0007785: RePlugin patch for pcre from Debian bug report #710375|
squeak-vm uses the system pcre library which does not provide the
int pcre_fullinfo(const pcre *code, const pcre_extra *extra,
int what, void *where);
The pcre_fullinfo() function returns information about a
tern. It replaces the pcre_info() function, which was removed
library at version 8.30, after more than 10 years of obsolescence.
|Additional Information||A patch has been provided by a Debian maintainer, but may need to be reimplemented in the plugin slang.|
(0014432 - 921 - 979 - 1095 - 1095 - 1095 - 1095)
RePlugin was written by Andrew C. Greenberg. It consists of a VM plugin in package RegexPlugin, some interface classes in package Regex-Base, and a test suite in package Regex-tests.
An overview is on the Swiki at http://wiki.squeak.org/squeak/558. [^]
The RePlugin distribution is on SqueakMap as package "Regular Expression Plugin". The most recent update is version 3.31, which is a SAR distribution containing the plugin, the image support code, the unit tests, and documention. The package is fully functional and all tests are green when running on a 32 bit VM (e.g. an interpreter VM from www.squeakvm.org/unix, or Cog if the plugin is present).
The RePlugin is now part of the VMMaker package, so the RegexPlugin package from the SqueakMap distribution is superceded by the RePlugin VMMaker-Plugins.
RePlugin also requires updates for 32/64 bit compilation. It crashes the VM when compiled in 64-bit mode.
(0014433 - 228 - 228 - 228 - 228 - 228 - 228)
|The patch provided for Debian build resolves the linker errors by disabling a primitive. However, the primitive still requires a proper fix in VMMaker to use the new pcre_fullinfo() function rather than the obsolete pcre_info().|
(0014434 - 601 - 613 - 613 - 613 - 613 - 613)
Source code for an early version of the PCRE is in platforms/Cross/plugins/RePlugin. The VM is compiled with this code, rather than using OS supplied libraries. The link error reported in the Debian bug report is probably a result of link-time confusion between the OS supplied library and the code in our platforms/Cross tree.
We should stop using a local (and obsolete) version of the PCRE, and begin linking directly to the platform supplied library when present. Unix/Linux systems are sure to provide a PCRE implementation, but I don't know the status with respect to Windows, iOS, RiscOS etc.
(0014435 - 223 - 223 - 223 - 223 - 223 - 223)
|The platforms/win32 and platforms/iOS both provide RePlugin.c files that have been generated from the Smalltalk plugin, which is now maintained in VMMaker. These generated sources should be removed from the platforms trees.|
(0014436 - 357 - 357 - 357 - 357 - 357 - 357)
|Note - the original platforms source for PCRE in platforms/Cross/RePlugin contains the then-current implementations of the pcre_info() and pcre_fullinfo() functions. Documentation of the original pcre_info() function is not readily available, so use this local code as reference for how to update the RePlugin in VMMaker to use the pcre_fullinfo() function.|
(0014438 - 151 - 161 - 161 - 161 - 161 - 161)
Fixed in Cog and merged into VMMaker-eem.323. Also fixed arg count of primPCREExecfromto
and compilation warnings in rePluginFree: & rePluginMalloc:.
|08-12-13 18:19||lewis||New Issue|
|08-12-13 18:19||lewis||Status||new => assigned|
|08-12-13 18:19||lewis||Assigned To||=> lewis|
|08-15-13 02:47||lewis||Note Added: 0014432|
|08-15-13 02:50||lewis||Note Added: 0014433|
|08-18-13 15:43||lewis||Note Added: 0014434|
|08-18-13 15:45||lewis||Note Added: 0014435|
|08-18-13 15:50||lewis||Note Added: 0014436|
|08-28-13 18:04||eem||Note Added: 0014438|
|08-28-13 18:04||eem||Assigned To||lewis => eem|
|08-28-13 18:04||eem||Resolution||open => fixed|
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