275939 2024-06-26 21:03:44 -0700 Negative exponent exception for BigInt not thrown in JIT compiler 2024-07-10 18:32:49 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Local Build Unspecified All RESOLVED FIXED InRadar P2 Normal --- 1 q602706150 yijia_huang mark.lam webkit-bug-importer yijia_huang ysuzuki oldest_to_newest 2043348 0 q602706150 2024-06-26 21:03:44 -0700 The following script should output 10 lines of same result. ``` function opt() { try { 1n ** -1n; } catch (e) { return e } return 0; } for (let i = 0; i < 10; i++) { print(opt()) } ``` Actual output: ``` RangeError: Negative exponent is not allowed RangeError: Negative exponent is not allowed RangeError: Negative exponent is not allowed RangeError: Negative exponent is not allowed RangeError: Negative exponent is not allowed RangeError: Negative exponent is not allowed RangeError: Negative exponent is not allowed 0 0 0 ``` run args: cmake-build-debug/bin/jsc --useConcurrentJIT=0 --jitPolicyScale=0.00005 ./test.js commit id: 47fe298829ac629f561518641b7e6bc4069cb09b 2043717 1 ap 2024-06-28 18:03:35 -0700 I can reproduce this on macOS 14.6 beta. 2044380 2 q602706150 2024-07-02 20:24:33 -0700 The same problem happens on div operator. ``` function opt() { try { 0n / 0n } catch (e) { return e } return 0; } for (let i = 0; i < 10; i++) { print(opt()) } ``` Actual output: ``` RangeError: 0 is an invalid divisor value. RangeError: 0 is an invalid divisor value. RangeError: 0 is an invalid divisor value. RangeError: 0 is an invalid divisor value. RangeError: 0 is an invalid divisor value. RangeError: 0 is an invalid divisor value. RangeError: 0 is an invalid divisor value. 0 0 0 ``` seems that some `Node` that have side effect were removed, because no one was using them. 2044445 3 webkit-bug-importer 2024-07-03 07:47:57 -0700 <rdar://problem/131051084> 2045412 4 yijia_huang 2024-07-09 14:41:09 -0700 Pull request: https://github.com/WebKit/WebKit/pull/30620 2045623 5 yijia_huang 2024-07-10 14:57:11 -0700 *** Bug 276435 has been marked as a duplicate of this bug. *** 2045675 6 ews-feeder 2024-07-10 18:32:47 -0700 Committed 280841@main (02429197cd90): <https://commits.webkit.org/280841@main> Reviewed commits have been landed. Closing PR #30620 and removing active labels.