From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- .../bug1675755-forceLexicalInitializationByName.js | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 js/src/jit-test/tests/debug/bug1675755-forceLexicalInitializationByName.js (limited to 'js/src/jit-test/tests/debug/bug1675755-forceLexicalInitializationByName.js') diff --git a/js/src/jit-test/tests/debug/bug1675755-forceLexicalInitializationByName.js b/js/src/jit-test/tests/debug/bug1675755-forceLexicalInitializationByName.js new file mode 100644 index 0000000000..14b1af27fc --- /dev/null +++ b/js/src/jit-test/tests/debug/bug1675755-forceLexicalInitializationByName.js @@ -0,0 +1,38 @@ +load(libdir + "asserts.js"); + +var g = newGlobal({newCompartment: true}); +var dbg = new Debugger; +var gw = dbg.addDebuggee(g); + +let errorOne, errorTwo; + +function evalErrorStr(global, evalString) { + try { + global.evaluate(evalString); + return undefined; + } catch (e) { + return e.toString(); + } +} + + +assertEq(evalErrorStr(g, "let y = IDONTEXIST;"), "ReferenceError: IDONTEXIST is not defined"); +assertEq(evalErrorStr(g, "y = 1;"), + "ReferenceError: can't access lexical declaration 'y' before initialization"); + +const LINEAR_SEARCHES_MAX = 3; +const SHAPE_CACHE_MIN_ENTRIES = 3; + +// Give the lexical enough properties so that it isBigEnoughForAShapeTable(). +for (i in [...Array(SHAPE_CACHE_MIN_ENTRIES)]) + gw.executeInGlobal(`let x${i} = 1`); + +// Search for y just enough times to cause the next search to trigger +// Shape::cachify(). +for (i in [...Array(LINEAR_SEARCHES_MAX - 1)]) + gw.executeInGlobal("y"); + +// Here we flip the uninitialized binding to undefined. But in the process, we +// will do the lookup on y that will trigger Shape::cachify. Verify that it +// happens in the correct compartment. +assertEq(gw.forceLexicalInitializationByName("y"), true); -- cgit v1.2.3