Fix `exec s in other_module`

the ast interpreter would incorrectly think it could OSR out to
the JIT, which would barf.

src/codegen/ast_interpreter.cpp

@@ -441,9 +441,9 @@ Value ASTInterpreter::visit_jump(AST_Jump* node) {
     if (backedge)
         threading::allowGLReadPreemption();
 
-    if (ENABLE_OSR && backedge && (globals->cls == module_cls)) {
-        bool can_osr = !FORCE_INTERPRETER && (globals->cls == module_cls);
-        if (can_osr && edgecount++ == OSR_THRESHOLD_INTERPRETER) {
+    if (ENABLE_OSR && backedge && edgecount++ == OSR_THRESHOLD_INTERPRETER) {
+        bool can_osr = !FORCE_INTERPRETER && source_info->scoping->areGlobalsFromModule();
+        if (can_osr) {
             static StatCounter ast_osrs("num_ast_osrs");
             ast_osrs.log();
 

src/codegen/irgen/irgenerator.cpp

@@ -310,7 +310,8 @@ public:
     explicit IREmitterImpl(IRGenState* irstate, llvm::BasicBlock*& curblock, IRGenerator* irgenerator)
         : irstate(irstate), builder(new IRBuilder(g.context)), curblock(curblock), irgenerator(irgenerator) {
 
-        ASSERT(irstate->getSourceInfo()->scoping->areGlobalsFromModule(), "jit doesn't support custom globals yet");
+        RELEASE_ASSERT(irstate->getSourceInfo()->scoping->areGlobalsFromModule(),
+                       "jit doesn't support custom globals yet");
 
         builder->setEmitter(this);
         builder->SetInsertPoint(curblock);

test/integration/virtualenv_test.py

@@ -29,7 +29,7 @@ python -c 'from PIL import Image; print "Pillow imports"'
 """.strip()
 
 # print sh_script
-subprocess.check_call(["sh", "-c", sh_script])
+subprocess.check_call(["sh", "-c", sh_script], stdout=sys.stderr)
 
 print
 print "PASSED"

test/tests/exec_in_test.py

@@ -161,3 +161,20 @@ s = "from sys import *"
 g = dict()
 exec s in g
 print "version" in g
+
+# Test to make sure that 'exec s in other_module' is handled correctly:
+import import_target
+assert import_target.z == 2
+z = 3
+
+exec "print z" in import_target.__dict__, {}
+exec "print z" in globals(), {}
+# Try it with osr as well:
+s = """
+print z
+for i in xrange(20000):
+    pass
+print z
+"""
+exec s in import_target.__dict__, {}
+exec s in globals(), {}