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-rw-r--r--regex/regfree.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/regex/regfree.c b/regex/regfree.c
new file mode 100644
index 00000000000..a0dd8087a45
--- /dev/null
+++ b/regex/regfree.c
@@ -0,0 +1,38 @@
+#include <global.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <regex.h>
+
+#include "utils.h"
+#include "regex2.h"
+
+/*
+ - regfree - free everything
+ = extern void regfree(regex_t *);
+ */
+void
+regfree(preg)
+regex_t *preg;
+{
+ register struct re_guts *g;
+
+ if (preg->re_magic != MAGIC1) /* oops */
+ return; /* nice to complain, but hard */
+
+ g = preg->re_g;
+ if (g == NULL || g->magic != MAGIC2) /* oops again */
+ return;
+ preg->re_magic = 0; /* mark it invalid */
+ g->magic = 0; /* mark it invalid */
+
+ if (g->strip != NULL)
+ free((char *)g->strip);
+ if (g->sets != NULL)
+ free((char *)g->sets);
+ if (g->setbits != NULL)
+ free((char *)g->setbits);
+ if (g->must != NULL)
+ free(g->must);
+ free((char *)g);
+}