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-rw-r--r--posix/bug-regex24.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/posix/bug-regex24.c b/posix/bug-regex24.c
new file mode 100644
index 0000000..83ea10b
--- /dev/null
+++ b/posix/bug-regex24.c
@@ -0,0 +1,59 @@
+#include <regex.h>
+#include <stdio.h>
+
+#define str "civic"
+
+#define N 10
+static const char *expected[N] =
+ {
+ str, "c", "i", "", "", "", "", "", "", ""
+ };
+
+static int
+do_test (void)
+{
+ regex_t rbuf;
+ static const char pat[] = "\
+^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$";
+
+ int err = regcomp (&rbuf, pat, REG_EXTENDED);
+ if (err != 0)
+ {
+ char errstr[300];
+ regerror (err, &rbuf, errstr, sizeof (errstr));
+ puts (errstr);
+ return err;
+ }
+
+ regmatch_t m[N];
+ err = regexec (&rbuf, str, N, m, 0);
+ if (err != 0)
+ {
+ puts ("regexec failed");
+ return 1;
+ }
+
+ int result = 0;
+ for (int i = 0; i < N; ++i)
+ if (m[i].rm_so == -1)
+ {
+ printf ("m[%d] unused\n", i);
+ result = 1;
+ }
+ else
+ {
+ int len = m[i].rm_eo - m[i].rm_so;
+
+ printf ("m[%d] = \"%.*s\"\n", i, len, str + m[i].rm_so);
+
+ if (strlen (expected[i]) != len
+ || memcmp (expected[i], str + m[i].rm_so, len) != 0)
+ result = 1;
+ }
+
+ return result;
+}
+
+#define TIMEOUT 30
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"