Added "weak" type aliases def Foo = my_foo::Foo @weak;

test/test_suite/define/weak_alias_fails.c3

@@ -0,0 +1,32 @@
+module abc;
+import std::math;
+def Vec2f = std::math::vector::Vec2f @weak;
+fn Vec2f foo(Vec2f a) { return a * 2; }
+
+module gog;
+import std::math;
+def Vec2f = std::math::vector::Vec2f;
+
+module deef;
+import gog;
+
+def Vec2f = gog::Vec2f @weak;
+fn Vec2f foo(Vec2f a) { return a * 2; }
+
+module test;
+import abc;
+import std::math;
+fn void test()
+{
+	Vec2f a;
+	abc::foo(a);
+}
+
+module test2;
+import abc;
+import deef;
+fn void test2()
+{
+	Vec2f a; // #error: abc::Vec2f or deef::Vec2f
+	abc::foo(a);
+}

test/test_suite/define/weak_aliases.c3

@@ -0,0 +1,32 @@
+module abc;
+import std::math;
+def Vec2f = std::math::vector::Vec2f @weak;
+fn Vec2f foo(Vec2f a) { return a * 2; }
+
+module gog;
+import std::math;
+def Vec2f = std::math::vector::Vec2f @weak;
+
+module deef;
+import gog;
+
+def Vec2f = gog::Vec2f @weak;
+fn Vec2f foo(Vec2f a) { return a * 2; }
+
+module test;
+import abc;
+import std::math;
+fn void test()
+{
+	Vec2f a;
+	abc::foo(a);
+}
+
+module test2;
+import abc;
+import deef;
+fn void test2()
+{
+	Vec2f a;
+	abc::foo(a);
+}

test/test_suite/visibility/ambiguous_var.c3t

@@ -23,5 +23,5 @@ fn void test2()
     c = foo::b;
     c = bar::b;
     c = foo::a;
-    c = b; // #error: global variable needs a path prefix (e.g. 'bar::b')
+    c = b; // #error: global variable needs a path prefix (e.g. 'foo::b')
 }