1 files changed, 42 insertions, 0 deletions
diff --git a/erts/lib_src/yielding_c_fun/test/examples/test_trap.c b/erts/lib_src/yielding_c_fun/test/examples/test_trap.c
new file mode 100644
index 0000000000..7799de618e
--- /dev/null
+++ b/erts/lib_src/yielding_c_fun/test/examples/test_trap.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#define YCF_YIELD()
+
+
+int fun(char x){
+  int y = 10;
+  int i = 0;
+  printf("BEFORE YCF_YIELD()\n");
+  y = y + x;/*y == 11*/
+  for (i = 0; i < 100; i++){
+    printf("ITER %d\n", i);
+    y = y + x;
+    YCF_YIELD();
+  }
+  printf("AFTER YCF_YIELD()\n");/*y == 111*/
+  y = y*3;
+  return y;/*y == 333*/
+}
+
+int main( int argc, const char* argv[] )
+{
+#ifdef YCF_YIELD_CODE_GENERATED
+  void* wb = NULL;
+#endif
+  int ret = 0;
+#ifdef YCF_YIELD_CODE_GENERATED
+  do{
+    ret = fun(1,&wb,1);
+    if(wb != NULL){
+      printf("TRAPPED\n");
+    }
+  }while(wb != NULL);
+#else
+  fun(1);
+#endif
+  printf("RETURNED %d\n", ret);
+  return 0;
+}
+
+