1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/modules/bug-1287410.js b/js/src/jit-test/tests/modules/bug-1287410.js
new file mode 100644
index 000000000..8a891372a
--- /dev/null
+++ b/js/src/jit-test/tests/modules/bug-1287410.js
@@ -0,0 +1,22 @@
+// |jit-test| error: InternalError
+
+let moduleRepo = {};
+setModuleResolveHook(function(module, specifier) {
+    if (specifier in moduleRepo)
+        return moduleRepo[specifier];
+    throw "Module '" + specifier + "' not found";
+});
+let a = moduleRepo['a'] = parseModule("export var a = 1; export var b = 2;");
+let b = moduleRepo['b'] = parseModule("export var b = 3; export var c = 4;");
+let c = moduleRepo['c'] = parseModule("export * from 'a'; export * from 'b';");
+c.declarationInstantiation();
+
+// Module 'a' is replaced with another module that has not been instantiated.
+// This should not happen and would be a bug in the module loader.
+a = moduleRepo['a'] = parseModule("export var a = 1; export var b = 2;");
+
+let d = moduleRepo['d'] = parseModule("import { a } from 'c'; a;");
+
+// Attempting to instantiate 'd' throws an error because depdency 'a' of
+// instantiated module 'c' is not instantiated.
+d.declarationInstantiation();