1 files changed, 4 insertions, 0 deletions
diff --git a/js/src/wasm/WasmModule.cpp b/js/src/wasm/WasmModule.cpp
index a297e81ad3..406c16462b 100644
--- a/js/src/wasm/WasmModule.cpp
+++ b/js/src/wasm/WasmModule.cpp
@@ -486,6 +486,10 @@ bool Module::instantiateFunctions(JSContext* cx,
       const Import& import = FindImportFunction(imports_, i);
       UniqueChars importModuleName = import.module.toQuotedString(cx);
       UniqueChars importFieldName = import.field.toQuotedString(cx);
+      if (!importFieldName || !importModuleName) {
+        ReportOutOfMemory(cx);
+        return false;
+      }
       JS_ReportErrorNumberUTF8(cx, GetErrorMessage, nullptr,
                                JSMSG_WASM_BAD_IMPORT_SIG,
                                importModuleName.get(), importFieldName.get());