Bug#217092: libc6-dev: leaks memory in regcomp (/usr/include/regex.h)

[Alexander Kjall <capitol@sigma.su.se>]

Package: libc6-dev
Version: 2.3.2-8
Severity: normal

A memoryleak in regcomp, a example program is included below plus some
output from valgrind.

It might be that i use it wrongly but I don't think so.

#include <sys/types.h>
#include <regex.h>

#include <iostream>
#include <string>

void cleanup(int toexit);

regex_t *reg;

bool check_input(std::string in)
{
  if(reg == 0)
  {
    reg = new regex_t;
  }
	  
  if(int err = regcomp(reg, "^[0-9]+:[A-Za-z,]+:.*$", 0))
  cleanup(err);
		
  regmatch_t ptype;
  return regexec(reg, in.c_str(), 0, &ptype, 0) != 0;
}
		    
void cleanup(int toexit)
{
  if(reg != 0)
  {
    regfree(reg);
  }
  exit(toexit);
}
				
int main(int argc, char *argv[])
{
  std::string in = "3520872:all:message";
  check_input(in.c_str());
  check_input(in.c_str());
				      
  cleanup(0);
}
					
and some of the output from valgrind
==28354== LEAK SUMMARY:
==28354==    definitely lost: 348 bytes in 2 blocks.
==28354==    possibly lost:   1280 bytes in 1 blocks.
==28354==    still reachable: 5588 bytes in 90 blocks.
==28354==         suppressed: 0 bytes in 0 blocks.
==28354== Reachable blocks (those to which a pointer was found) are not shown.
==28354== To see them, rerun with: --show-reachable=yes
==28354== 

-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux paranor 2.4.21-4-k7 #1 Sun Aug 3 02:34:06 EST 2003 i686
Locale: LANG=sv_SE, LC_CTYPE=sv_SE

Versions of packages libc6-dev depends on:
ii  libc6                         2.3.2-8    GNU C Library: Shared libraries an

-- no debconf information