fix: propagate implicit target to macro fallback#3382
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emilio merged 1 commit intoJul 6, 2026
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emilio
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Jul 6, 2026
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Summary
Fixes #3352.
When bindgen infers a non-host
--target=from CargoTARGET, it inserts that target into the main clang arguments, butfallback_clang_argshas already been copied.clang_macro_fallback()can then evaluate macros with the host target instead of the effective target.Copy the inferred target into
fallback_clang_argsat the same time, and add a regression test that evaluates__SIZEOF_POINTER__through the fallback translation unit under anarmv7Cargo target.