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Commitea8c7e9

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Fix memory leak during regular expression execution.
For a regex containing backrefs, pg_regexec() might fail to free all thesub-DFAs that were created during execution, resulting in a permanent(session lifespan) memory leak. Problem was introduced by me in commit5873594. Per report from Sandro Santilli;diagnosis by Greg Stark.
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‎src/backend/regex/regexec.c

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Original file line numberDiff line numberDiff line change
@@ -259,6 +259,7 @@ pg_regexec(regex_t *re,
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/* clean up */
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if (v->pmatch!=pmatch&&v->pmatch!=mat)
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FREE(v->pmatch);
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n= (size_t)v->g->ntree;
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for (i=0;i<n;i++)
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{
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if (v->subdfas[i]!=NULL)

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