assert: Check typed array view type in deepEqual (backport to 4.x) #6147
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Do not convert typed arrays to `Buffer` for deepEqual since their values may not be accurately represented by 8-bit ints. Instead perform binary comparison of underlying `ArrayBuffer`s, but only when the array types match. Never apply any kind of optimization for floating-point typed arrays since bit pattern equality is not the right kind of check for them. PR-URL: nodejs#5910 Reviewed-By: Benjamin Gruenbaum <[email protected]> Fixes: nodejs#5907
3 tasks
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@addaleax thanks so much for this! I'm loving seeing the little verified tag next to your commit sha. Just so you know our cherry-pick style will lose your signature as we create releases... that being said super cool it was included!!! |
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landed as f949c27 |
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@thealphanerd No problem! 😄 And yep, I know the signature will be lost – it’s just a default I have set up because it’s a nice feature of git and it doesn’t really hurt anyone :) |
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Checklist
Affected core subsystem(s)
assert
Description of change
This is a backport of #5910 and is identical to what landed in master up to
s/Buffer.from/new Buffer/.Do not convert typed arrays to Buffer for deepEqual since their values may not be accurately represented by 8-bit ints. Instead perform binary comparison of underlying ArrayBuffers, but only when the array types match.
Never apply any kind of optimization for floating-point typed arrays since bit pattern equality is not the right kind of check for them.
Fixes: #5907 (introduced in #4330)