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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/jit-test/tests/debug/optimized-out-arrow-this.js | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit-test/tests/debug/optimized-out-arrow-this.js')
-rw-r--r-- | js/src/jit-test/tests/debug/optimized-out-arrow-this.js | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/optimized-out-arrow-this.js b/js/src/jit-test/tests/debug/optimized-out-arrow-this.js new file mode 100644 index 0000000000..adc1702fa1 --- /dev/null +++ b/js/src/jit-test/tests/debug/optimized-out-arrow-this.js @@ -0,0 +1,38 @@ +var g = newGlobal({newCompartment: true}); +var dbg = new Debugger(g); + +g.eval(` +function f() { + // |this| in arrow-functions refers to the |this| binding in outer functions. + // So when |frame.eval("this")| is executed, the outer |this| binding should + // be returned, unless it has been optimised out. + (() => {})(); + + // Ensure a |this| binding is created for |f|. + return this; +} +`); + +var errors = []; + +function enterFrame(frame) { + // Disable the handler so we don't call it recursively through |frame.eval|. + dbg.onEnterFrame = undefined; + + // Store the error when resolving |this| was unsuccessful. + var r = frame.eval("this"); + if (r.throw) { + errors.push(r.throw); + } + + // Re-enable the handler. + dbg.onEnterFrame = enterFrame; +}; + +dbg.onEnterFrame = enterFrame; + +g.f(); + +assertEq(errors.length, 1); +assertEq(errors[0].unsafeDereference().toString(), + "Error: variable 'this' has been optimized out"); |