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@tbkka tbkka commented Nov 17, 2025

The new implementation strongly assumes the buffer is pre-filled with "0" characters (0x30). This breaks folks trying to integrate this with the old stdlib code that did not do the pre-filling and called the legacy ABI.

Resolves #85539

@tbkka tbkka requested a review from a team as a code owner November 17, 2025 18:58
@tbkka tbkka enabled auto-merge November 17, 2025 18:58
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tbkka commented Nov 17, 2025

@swift-ci Please test

@tbkka tbkka merged commit a271eb2 into swiftlang:main Nov 18, 2025
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Swift FloatingPointToString API incompatible with legacy C++ version (backwards compatibility ABI)

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