1 files changed, 31 insertions, 0 deletions
diff --git a/deps/jemalloc/include/jemalloc/internal/safety_check.h b/deps/jemalloc/include/jemalloc/internal/safety_check.h
new file mode 100644
index 0000000..f1a74f1
--- /dev/null
+++ b/deps/jemalloc/include/jemalloc/internal/safety_check.h
@@ -0,0 +1,31 @@
+#ifndef JEMALLOC_INTERNAL_SAFETY_CHECK_H
+#define JEMALLOC_INTERNAL_SAFETY_CHECK_H
+
+void safety_check_fail_sized_dealloc(bool current_dealloc, const void *ptr,
+    size_t true_size, size_t input_size);
+void safety_check_fail(const char *format, ...);
+
+typedef void (*safety_check_abort_hook_t)(const char *message);
+
+/* Can set to NULL for a default. */
+void safety_check_set_abort(safety_check_abort_hook_t abort_fn);
+
+JEMALLOC_ALWAYS_INLINE void
+safety_check_set_redzone(void *ptr, size_t usize, size_t bumped_usize) {
+	assert(usize < bumped_usize);
+	for (size_t i = usize; i < bumped_usize && i < usize + 32; ++i) {
+		*((unsigned char *)ptr + i) = 0xBC;
+	}
+}
+
+JEMALLOC_ALWAYS_INLINE void
+safety_check_verify_redzone(const void *ptr, size_t usize, size_t bumped_usize)
+{
+	for (size_t i = usize; i < bumped_usize && i < usize + 32; ++i) {
+		if (unlikely(*((unsigned char *)ptr + i) != 0xBC)) {
+			safety_check_fail("Use after free error\n");
+		}
+	}
+}
+
+#endif /*JEMALLOC_INTERNAL_SAFETY_CHECK_H */