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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/non262/RegExp/match-local-tolength-recompilation.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/RegExp/match-local-tolength-recompilation.js | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/js/src/tests/non262/RegExp/match-local-tolength-recompilation.js b/js/src/tests/non262/RegExp/match-local-tolength-recompilation.js new file mode 100644 index 0000000000..9a992f81f4 --- /dev/null +++ b/js/src/tests/non262/RegExp/match-local-tolength-recompilation.js @@ -0,0 +1,75 @@ +// Side-effects when calling ToLength(regExp.lastIndex) in +// RegExp.prototype[@@match] for non-global RegExp can recompile the RegExp. + +for (var flag of ["", "y"]) { + var regExp = new RegExp("a", flag); + + regExp.lastIndex = { + valueOf() { + regExp.compile("b"); + return 0; + } + }; + + var result = regExp[Symbol.match]("b"); + assertEq(result !== null, true); +} + +// Recompilation modifies flag: +// Case 1: Adds global flag, validate by checking lastIndex. +var regExp = new RegExp("a", ""); +regExp.lastIndex = { + valueOf() { + // |regExp| is now in global mode, RegExpBuiltinExec should update the + // lastIndex property to reflect last match. + regExp.compile("a", "g"); + return 0; + } +}; +regExp[Symbol.match]("a"); +assertEq(regExp.lastIndex, 1); + +// Case 2: Removes sticky flag with match, validate by checking lastIndex. +var regExp = new RegExp("a", "y"); +regExp.lastIndex = { + valueOf() { + // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the + // lastIndex property. + regExp.compile("a", ""); + regExp.lastIndex = 9000; + return 0; + } +}; +regExp[Symbol.match]("a"); +assertEq(regExp.lastIndex, 9000); + +// Case 3.a: Removes sticky flag without match, validate by checking lastIndex. +var regExp = new RegExp("a", "y"); +regExp.lastIndex = { + valueOf() { + // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the + // lastIndex property. + regExp.compile("b", ""); + regExp.lastIndex = 9001; + return 0; + } +}; +regExp[Symbol.match]("a"); +assertEq(regExp.lastIndex, 9001); + +// Case 3.b: Removes sticky flag without match, validate by checking lastIndex. +var regExp = new RegExp("a", "y"); +regExp.lastIndex = { + valueOf() { + // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the + // lastIndex property. + regExp.compile("b", ""); + regExp.lastIndex = 9002; + return 10000; + } +}; +regExp[Symbol.match]("a"); +assertEq(regExp.lastIndex, 9002); + +if (typeof reportCompare === "function") + reportCompare(true, true); |