# FIX for memory leak in 1.7.9p2 match()

Pavel Curtis (Pavel@parc.xerox.com)
Mon, 18 Dec 1995 18:52:21 PST

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    Here's a patch for the nasty memory leak recently reported in the
    implementation of match() in 1.7.9p2.  In the file regexpr.c, add the lines
    marked with plus signs below, at the indicated place in the code.

    *** regexpr.c.old 1995/11/30 05:38:08
    --- regexpr.c     1995/12/18 00:41:15
    ***************
    *** 1261,1266 ****
    --- 1261,1268 ----
                  memcpy((char *)new_stack_start,
                         (char *)failure_stack_start,
                         failure_stack_size * sizeof(*failure_stack_start));
    +             if (failure_stack_start != initial_failure_stack)
    +                 free((char *)failure_stack_start);
                  failure_stack_start = new_stack_start;
                  failure_sp = failure_stack_start + failure_stack_size;
                  failure_stack_size *= 2;

    This patch will be in 1.8.0alpha3, due out soon.

    	Pavel