Closed hyp3rflow closed 6 months ago
I thought that #8924 occurs only in undefined exponent, however same result happens with NaN exponent.
undefined
NaN
"use strict"; const k = (() => { let x = 1; x **= undefined / x; return x; })();
{ "jsc": { "parser": { "syntax": "ecmascript", "jsx": false }, "target": "es2022", "loose": false, "minify": { "compress": { "arguments": false, "arrows": true, "booleans": true, "booleans_as_integers": false, "collapse_vars": true, "comparisons": true, "computed_props": true, "conditionals": true, "dead_code": true, "directives": true, "drop_console": false, "drop_debugger": true, "evaluate": true, "expression": false, "hoist_funs": false, "hoist_props": true, "hoist_vars": false, "if_return": true, "join_vars": true, "keep_classnames": false, "keep_fargs": true, "keep_fnames": false, "keep_infinity": false, "loops": true, "negate_iife": true, "properties": true, "reduce_funcs": false, "reduce_vars": false, "side_effects": true, "switches": true, "typeofs": true, "unsafe": false, "unsafe_arrows": false, "unsafe_comps": false, "unsafe_Function": false, "unsafe_math": false, "unsafe_symbols": false, "unsafe_methods": false, "unsafe_proto": false, "unsafe_regexp": false, "unsafe_undefined": false, "unused": true, "const_to_let": true, "pristine_globals": true }, "mangle": { "toplevel": false, "keep_classnames": false, "keep_fnames": false, "keep_private_props": false, "ie8": false, "safari10": false } } }, "module": { "type": "commonjs" }, "minify": false, "isModule": false }
https://play.swc.rs/?version=1.5.5&code=H4sIAAAAAAAAAxXIQQqAIBBG4b2n%2BHE1uonWYpfRCaSYQEcQorunu%2Fc%2B2xujaS1JbTDpkaa4EEHkEA%2B8BrhZMSbtYc6A9xFdMp9FOGPDWFxZe5XVnyMXfkvq7g1WAAAA&config=H4sIAAAAAAAAA41VwW7bMAy99ysCn3focir2AbvtGwTFohxlsmiIlJugyL%2BPVuw0bWhjlyDm0yNF8pH6eNntmhO1za%2Fdh%2FyVj8Fmgnz%2FFgtdEtuzWBpoe0ttDgM3Pxb0RBPkbSSopusNadjmDriyaP%2B638%2BMJiISLIzZ1ocU%2FOUxZov9kIHowSZWcVl6SExf%2BTOW8X0COJdH%2BwExgk0biLFkQmLoIGuOW4zRDgRmtFnxMt3U5kCohZjAwuDMkHFQ8eQCB0wS8xl1YJ1p0YEChQwthxE0msQSWiJJT8mnwg4Opetqn7%2BxYbSxWFZiwrm2RG6reD1iIDa%2BJK2EN3ClBjdwLu53ZvAmA5ecnnknDGmlJ38BpALREiXbg%2Ba3nvCipzW232SG5EWyfFFw0beWZYJOimpC8Eplp8pA5qB1M4MrLUyVbbXrzPBK%2BSg4MOC9aEVxTe%2BB26MWlC8DoFcA6a%2F1mqpugLlP4Qo%2BDcQG%2FFuyZF1g84ne8nEdpUt%2FwLgRoAc%2Bots4IK1gXIezbInzsI6X5ECkAU49UqgCz0tABoDRxLovn7Qh4yEeTRfx8Lkm5gPX%2Bx7uberqvD%2FsS8YhwghxTcb%2FMSKbqNxtnFS9TPbT9MKbJkorgxd%2Bvn55NiSVl%2BW3JtX06MpDQlWT03MiEuoxnaj5PLk8H%2FdITaA%2FC%2F0W4%2FoPf3j7aeoGAAA%3D
No response
k should be NaN
k is 1
1.5.5
This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.
Describe the bug
I thought that #8924 occurs only in
undefined
exponent, however same result happens withNaN
exponent.Input code
Config
Playground link (or link to the minimal reproduction)
https://play.swc.rs/?version=1.5.5&code=H4sIAAAAAAAAAxXIQQqAIBBG4b2n%2BHE1uonWYpfRCaSYQEcQorunu%2Fc%2B2xujaS1JbTDpkaa4EEHkEA%2B8BrhZMSbtYc6A9xFdMp9FOGPDWFxZe5XVnyMXfkvq7g1WAAAA&config=H4sIAAAAAAAAA41VwW7bMAy99ysCn3focir2AbvtGwTFohxlsmiIlJugyL%2BPVuw0bWhjlyDm0yNF8pH6eNntmhO1za%2Fdh%2FyVj8Fmgnz%2FFgtdEtuzWBpoe0ttDgM3Pxb0RBPkbSSopusNadjmDriyaP%2B638%2BMJiISLIzZ1ocU%2FOUxZov9kIHowSZWcVl6SExf%2BTOW8X0COJdH%2BwExgk0biLFkQmLoIGuOW4zRDgRmtFnxMt3U5kCohZjAwuDMkHFQ8eQCB0wS8xl1YJ1p0YEChQwthxE0msQSWiJJT8mnwg4Opetqn7%2BxYbSxWFZiwrm2RG6reD1iIDa%2BJK2EN3ClBjdwLu53ZvAmA5ecnnknDGmlJ38BpALREiXbg%2Ba3nvCipzW232SG5EWyfFFw0beWZYJOimpC8Eplp8pA5qB1M4MrLUyVbbXrzPBK%2BSg4MOC9aEVxTe%2BB26MWlC8DoFcA6a%2F1mqpugLlP4Qo%2BDcQG%2FFuyZF1g84ne8nEdpUt%2FwLgRoAc%2Bots4IK1gXIezbInzsI6X5ECkAU49UqgCz0tABoDRxLovn7Qh4yEeTRfx8Lkm5gPX%2Bx7uberqvD%2FsS8YhwghxTcb%2FMSKbqNxtnFS9TPbT9MKbJkorgxd%2Bvn55NiSVl%2BW3JtX06MpDQlWT03MiEuoxnaj5PLk8H%2FdITaA%2FC%2F0W4%2FoPf3j7aeoGAAA%3D
SWC Info output
No response
Expected behavior
k should be
NaN
Actual behavior
k is 1
Version
1.5.5
Additional context
No response