[llvm] r174347 - Use the do-while(0) thing for this #define.

[Michael Gottesman]

Nice.

On Feb 4, 2013, at 11:19 PM, Bill Wendling <isanbard at gmail.com> wrote:

> Author: void
> Date: Tue Feb  5 01:19:31 2013
> New Revision: 174347
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=174347&view=rev
> Log:
> Use the do-while(0) thing for this #define.
> 
> Modified:
>    llvm/trunk/lib/AsmParser/LLLexer.cpp
> 
> Modified: llvm/trunk/lib/AsmParser/LLLexer.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/AsmParser/LLLexer.cpp?rev=174347&r1=174346&r2=174347&view=diff
> ==============================================================================
> --- llvm/trunk/lib/AsmParser/LLLexer.cpp (original)
> +++ llvm/trunk/lib/AsmParser/LLLexer.cpp Tue Feb  5 01:19:31 2013
> @@ -436,9 +436,11 @@ lltok::Kind LLLexer::LexIdentifier() {
>   CurPtr = KeywordEnd;
>   --StartChar;
>   unsigned Len = CurPtr-StartChar;
> -#define KEYWORD(STR) \
> -  if (Len == strlen(#STR) && !memcmp(StartChar, #STR, strlen(#STR))) \
> -    return lltok::kw_##STR;
> +#define KEYWORD(STR)                                                    \
> +  do {                                                                  \
> +    if (Len == strlen(#STR) && !memcmp(StartChar, #STR, strlen(#STR)))  \
> +      return lltok::kw_##STR;                                           \
> +  } while (0)
> 
>   KEYWORD(true);    KEYWORD(false);
>   KEYWORD(declare); KEYWORD(define);
> @@ -490,11 +492,11 @@ lltok::Kind LLLexer::LexIdentifier() {
>   KEYWORD(seq_cst);
>   KEYWORD(singlethread);
> 
> -  KEYWORD(nnan)
> -  KEYWORD(ninf)
> -  KEYWORD(nsz)
> -  KEYWORD(arcp)
> -  KEYWORD(fast)
> +  KEYWORD(nnan);
> +  KEYWORD(ninf);
> +  KEYWORD(nsz);
> +  KEYWORD(arcp);
> +  KEYWORD(fast);
>   KEYWORD(nuw);
>   KEYWORD(nsw);
>   KEYWORD(exact);
> 
> 
> _______________________________________________
> llvm-commits mailing list
> llvm-commits at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits