diff options
Diffstat (limited to 'js/src/jit-test/tests/ion/inlining/TypedObject-ObjectIsTypeDescr-wrong.js')
-rw-r--r-- | js/src/jit-test/tests/ion/inlining/TypedObject-ObjectIsTypeDescr-wrong.js | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/inlining/TypedObject-ObjectIsTypeDescr-wrong.js b/js/src/jit-test/tests/ion/inlining/TypedObject-ObjectIsTypeDescr-wrong.js new file mode 100644 index 000000000..6696b2d2d --- /dev/null +++ b/js/src/jit-test/tests/ion/inlining/TypedObject-ObjectIsTypeDescr-wrong.js @@ -0,0 +1,39 @@ +/* -*- tab-width: 8; indent-tabs-mode: nil; js-indent-level: 2 -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* Used to verify that the JIT resolves the ObjectIsTypeDescr tests + * internal to Type.toSource(). + * + * In this case the argument type is never a type descriptor object, + * so ObjectIsTypeDescr resolves to false (and we have to catch + * exceptions). + * + * Load this into the js shell with IONFLAGS=logs, then exit and run + * iongraph. You're looking for a smallish function within the + * "self-hosted" domain. Look for a call to ObjectIsTypeDescr far + * down in the graph for pass00, with a call to DescrToSource in a + * subsequent block (all of this is at the mercy of the way the code + * is currently written). + */ + +if (!this.TypedObject) + quit(); + +var T = TypedObject; +var ST = new T.StructType({x:T.int32}); + +function check(v) { + return v.toSource(); +} + +function test() { + var fake = { toSource: ST.toSource }; + for ( var i=0 ; i < 1000 ; i++ ) + try { check(fake); } catch (e) {} + try { return check(fake); } catch (e) { return "Thrown" } +} + +print(test()); + |