================
@@ -2835,6 +2835,9 @@ class Preprocessor {
if (Identifier.getIdentifierInfo()->isRestrictExpansion() &&
!SourceMgr.isInMainFile(Identifier.getLocation()))
emitRestrictExpansionWarning(Identifier);
+
+ if (Identifier.getIdentifierInfo()->getName() == "INFINITY")
----------------
andykaylor wrote:
> Since NAN is defined as (-(float)(INFINITY * 0.0F)) when used in the program
> it will trigger the "use of infinity via a macro results in undefined
> behavior due to the currently enabled floating-point options
> [-Wnan-and-infinity-disabled]". Wouldn't that be enough? If I add NaN here we
> would get 2 warnings.
This is actually a bit unfortunate. If I use "-fhonor-nans
-fno-honor-infinities" this definition of NAN will trigger a warning, even
though I expect that we'll constant-fold it as expected without regard to the
"no-honor-infinities" setting.
https://github.com/llvm/llvm-project/pull/76873
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