1 files changed, 48 insertions, 0 deletions
diff --git a/widget/gtk/compat/glib/gmem.h b/widget/gtk/compat/glib/gmem.h
new file mode 100644
index 0000000000..78f24bbd8d
--- /dev/null
+++ b/widget/gtk/compat/glib/gmem.h
@@ -0,0 +1,48 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GMEM_WRAPPER_H
+#define GMEM_WRAPPER_H
+
+#define g_malloc_n g_malloc_n_
+#define g_malloc0_n g_malloc0_n_
+#define g_realloc_n g_realloc_n_
+#include_next <glib/gmem.h>
+#undef g_malloc_n
+#undef g_malloc0_n
+#undef g_realloc_n
+
+#include <glib/gmessages.h>
+
+#undef g_new
+#define g_new(type, num) ((type*)g_malloc_n((num), sizeof(type)))
+
+#undef g_new0
+#define g_new0(type, num) ((type*)g_malloc0_n((num), sizeof(type)))
+
+#undef g_renew
+#define g_renew(type, ptr, num) ((type*)g_realloc_n(ptr, (num), sizeof(type)))
+
+#define _CHECK_OVERFLOW(num, type_size)                                    \
+  if (G_UNLIKELY(type_size > 0 && num > G_MAXSIZE / type_size)) {          \
+    g_error("%s: overflow allocating %" G_GSIZE_FORMAT "*%" G_GSIZE_FORMAT \
+            " bytes",                                                      \
+            G_STRLOC, num, type_size);                                     \
+  }
+
+static inline gpointer g_malloc_n(gsize num, gsize type_size) {
+  _CHECK_OVERFLOW(num, type_size)
+  return g_malloc(num * type_size);
+}
+
+static inline gpointer g_malloc0_n(gsize num, gsize type_size) {
+  _CHECK_OVERFLOW(num, type_size)
+  return g_malloc0(num * type_size);
+}
+
+static inline gpointer g_realloc_n(gpointer ptr, gsize num, gsize type_size) {
+  _CHECK_OVERFLOW(num, type_size)
+  return g_realloc(ptr, num * type_size);
+}
+#endif /* GMEM_WRAPPER_H */