Use bool return type for various low-level emscripten APIs#26316
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sbc100 wants to merge 1 commit intoemscripten-core:mainfrom
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Use bool return type for various low-level emscripten APIs#26316sbc100 wants to merge 1 commit intoemscripten-core:mainfrom
sbc100 wants to merge 1 commit intoemscripten-core:mainfrom
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kripken
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Feb 21, 2026
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Please also add a changelog entry. lgtm with that + comments
We converted a EM_BOOL from `int` to `bool` without too much fallout so I think should a backwards compatible change for all users. It is of course conceivable to construct code that would notice this change (e.g. `sizeof(emscripten_is_main_runtime_thread())` but its seems extremely unlikely. I think using the explicit bool type helps make these function more clear, and avoids confusion with tradition "0 means success" C functions.
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We converted a
EM_BOOLfrominttoboolwithout too much fallout soI think should a backwards compatible change for all users.
It is of course conceivable to construct code that would notice this change (e.g.
sizeof(emscripten_is_main_runtime_thread())but its seems extremely unlikely.I think using the explicit bool type helps make these function more
clear, and avoids confusion with tradition "0 means success" C
functions.