efriedma added a comment.
If the declaration we're redeclaring is a builtin, should the diagnostic be in
the "-Wincompatible-library-redeclaration" warning group? With this patch, we
treat redefinitions of builtins without a prototype differently from
redefinitions with a prototype, for example:
void acos() {} // error
void acos(void) {} // warning
Just ran into some code in Android which is using the first form.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D123627/new/
https://reviews.llvm.org/D123627
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