[MacPorts] #57203: pcreposix segfault in regfree with trivial program

[MacPorts]

#57203: pcreposix segfault in regfree with trivial program
----------------------+--------------------
 Reporter:  markpizz  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:            |       Port:  pcre
----------------------+--------------------
 This program (retest.c) fails:
 {{{
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
 #include <pcreposix.h>
 #include <pcre.h>
 #include <pthread.h>

 int main (int argc, char **argv)
     {
     int re_result;
     regex_t re;
     char match_buf[64] = "Match This";

     printf("Using PCRE V %s\n", pcre_version());
     memset (&re, 0, sizeof(re));
     re_result = regcomp (&re, match_buf, REG_EXTENDED);
     if (re_result)
         {
         size_t err_size = regerror (re_result, &re, NULL, 0);
         char *err_buf = (char *)calloc (err_size+1, 1);

         regerror (re_result, &re, err_buf, err_size);
         fprintf (stderr, "Regular Expression Error compiling '%s': %s\n",
 match_buf, err_buf);
         free (err_buf);
         exit (1);
         }
     printf("Regular Expression compile of '%s' successful\n", match_buf);
     regfree (&re);
     }
 }}}
 This is how I see the failure:
 {{{
 bash-3.2# port list installed
 bash-3.2# port install pcre
 --->  Computing dependencies for pcre
 The following dependencies will be installed:
  bzip2
  libedit
  ncurses
  zlib
 Continue? [Y/n]: y
 --->  Fetching archive for bzip2
 --->  Attempting to fetch bzip2-1.0.6_0.darwin_17.x86_64.tbz2 from
 https://packages.macports.org/bzip2
 --->  Attempting to fetch bzip2-1.0.6_0.darwin_17.x86_64.tbz2.rmd160 from
 https://packages.macports.org/bzip2
 --->  Installing bzip2 @1.0.6_0
 --->  Activating bzip2 @1.0.6_0
 --->  Cleaning bzip2
 --->  Fetching archive for ncurses
 --->  Attempting to fetch ncurses-6.1_0.darwin_17.x86_64.tbz2 from
 https://packages.macports.org/ncurses
 --->  Attempting to fetch ncurses-6.1_0.darwin_17.x86_64.tbz2.rmd160 from
 https://packages.macports.org/ncurses
 --->  Installing ncurses @6.1_0
 --->  Activating ncurses @6.1_0
 --->  Cleaning ncurses
 --->  Fetching archive for libedit
 --->  Attempting to fetch libedit-20170329-3.1_2.darwin_17.x86_64.tbz2
 from https://packages.macports.org/libedit
 --->  Attempting to fetch
 libedit-20170329-3.1_2.darwin_17.x86_64.tbz2.rmd160 from
 https://packages.macports.org/libedit
 --->  Installing libedit @20170329-3.1_2
 --->  Activating libedit @20170329-3.1_2
 --->  Cleaning libedit
 --->  Fetching archive for zlib
 --->  Attempting to fetch zlib-1.2.11_0.darwin_17.x86_64.tbz2 from
 https://packages.macports.org/zlib
 --->  Attempting to fetch zlib-1.2.11_0.darwin_17.x86_64.tbz2.rmd160 from
 https://packages.macports.org/zlib
 --->  Installing zlib @1.2.11_0
 --->  Activating zlib @1.2.11_0
 --->  Cleaning zlib
 --->  Fetching archive for pcre
 --->  Attempting to fetch pcre-8.42_0.darwin_17.x86_64.tbz2 from
 https://packages.macports.org/pcre
 --->  Attempting to fetch pcre-8.42_0.darwin_17.x86_64.tbz2.rmd160 from
 https://packages.macports.org/pcre
 --->  Installing pcre @8.42_0
 --->  Activating pcre @8.42_0
 --->  Cleaning pcre
 --->  Updating database of binaries
 --->  Updating database of C++ stdlib usage
 --->  Scanning binaries for linking errors
 --->  No broken files found.
 --->  No broken ports found.
 bash-3.2# exit
 exit
 mac-mini:~ mark$ gcc retest.c -I/opt/local/include -L/opt/local/lib
 -lpthread -lpcreposix -lpcre -o retest
 mac-mini:~ mark$ ./retest
 Using PCRE V 8.42 2018-03-20
 Regular Expression compile of 'Match This' successful
 Segmentation fault: 11
 -mini:~ mark$
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/57203>
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