handle memmove of 0

1 files changed, 3 insertions, 0 deletions

diff --git a/tests/runner.py b/tests/runner.py
index ef6f024d..56add2db 100644
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -385,6 +385,9 @@ if 'benchmark' not in sys.argv:
 
           int main(int argc, char **argv)
           {
+            int x = 5, y = 9, magic = 7; // fool compiler with magic
+            memmove(&x, &y, magic-7); // 0 should not crash us
+
             printf("*%d\\n", argc);
             puts(argv[1]);
             puts(argv[2]);