1 files changed, 17 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 0000000000..14df1b14e4
--- /dev/null
+++ b/js/src/jit-test/tests/modules/bug-1287410.js
@@ -0,0 +1,17 @@
+// |jit-test| error: InternalError
+
+let a = registerModule('a', parseModule("export var a = 1; export var b = 2;"));
+let b = registerModule('b', parseModule("export var b = 3; export var c = 4;"));
+let c = registerModule('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 = registerModule('a', parseModule("export var a = 1; export var b = 2;"));
+
+let d = registerModule('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();
+d.evaluation();