1 files changed, 13 insertions, 0 deletions
diff --git a/error.c b/error.c
index a86485d558..f88c19a328 100644
--- a/error.c
+++ b/error.c
@@ -11,6 +11,7 @@
 
 #include "internal.h"
 #include "ruby/st.h"
+#include "ruby_assert.h"
 #include "vm_core.h"
 
 #include <stdio.h>
@@ -499,6 +500,18 @@ rb_compile_bug_str(VALUE file, int line, const char *fmt, ...)
     abort();
 }
 
+void
+rb_assert_failure(const char *file, int line, const char *name, const char *expr)
+{
+    FILE *out = stderr;
+    fprintf(out, "Assertion Failed: %s:%d:", file, line);
+    if (name) fprintf(out, "%s:", name);
+    fprintf(out, "%s\n%s\n\n", expr, ruby_description);
+    rb_vm_bugreport(NULL);
+    bug_report_end(out);
+    die();
+}
+
 static const char builtin_types[][10] = {
     "", 			/* 0x00, */
     "Object",