rsmith added inline comments.

================
Comment at: lib/Sema/SemaExpr.cpp:8808
+        Context.getTypeSize(pointerType) == 
+            Context.getTypeSize(IExp->getType()))
+      IsGNUIdiom = true;
----------------
andrew.w.kaylor wrote:
> efriedma wrote:
> > Please make sure you use exactly the same check in Sema and CodeGen 
> > (probably easiest to stick a helper into lib/AST/).
> That's a good idea, but I'm not really familiar enough with the structure of 
> clang to be sure I'm not doing it in a ham-fisted way.  Can you clarify?  Are 
> you suggesting adding something like ASTContext::isPointeeTypeCharSize() and 
> ASTContext::isIntegerTypePointerSize()?  Or maybe a single specialized 
> function somewhere that does both checks like 
> ASTContext::areOperandNullPointerArithmeticCompatible()?
I would suggest something even more specific, such as 
`isNullPointerPlusIntegerExtension`


https://reviews.llvm.org/D37042



_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

Reply via email to