1 files changed, 29 insertions, 0 deletions
diff --git a/erts/lib_src/yielding_c_fun/lib/tiny_regex_c/tests/test_rand_neg.c b/erts/lib_src/yielding_c_fun/lib/tiny_regex_c/tests/test_rand_neg.c
new file mode 100644
index 0000000000..192ce5c608
--- /dev/null
+++ b/erts/lib_src/yielding_c_fun/lib/tiny_regex_c/tests/test_rand_neg.c
@@ -0,0 +1,29 @@
+/*
+    Negative version of test_rand.c -- returns true if no match
+
+    This program tries to match a given regular expression with text given as input to stdin.
+    If the text is NOT a match for the pattern, the program returns 0.
+    If the text does match the pattern, the program returns -2.
+
+    This program is used in random testing to test a lot of random text and regex together.
+    See ./scripts/regex_test_neg.py and the Makefile for this project for the gritty details.
+*/
+
+#include <stdio.h>
+#include "re.h"
+
+
+int main(int argc, char** argv)
+{
+  if (argc == 3)
+  {
+    int m = re_match(argv[1], argv[2]);
+    if (m == -1)
+      return 0;
+  }
+  else
+  {
+    printf("\nUsage: %s <PATTERN> <TEXT> \n", argv[0]);
+  }
+  return -2;
+}