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Re: Patch to deprecate casts as lvalues for C


"Zack Weinberg" <zack@codesourcery.com> writes:

| Gabriel Dos Reis <gdr@integrable-solutions.net> writes:
| 
| > "Zack Weinberg" <zack@codesourcery.com> writes:
| >
| > | Gabriel Dos Reis <gdr@integrable-solutions.net> writes:
| > | 
| > | > "Joseph S. Myers" <jsm@polyomino.org.uk> writes:
| > | >
| > | > | +    default:
| > | > | +      pedwarn ("use of cast expressions as lvalues is deprecated");
| > | >
| > | > Just to be clear:  an unconditional pedwarn is an error if
| > | > -pedantic.
| > | 
| > | Not in the C front end it isn't.
| >
| > It is therefore C people's responsability to be careful about its use.
| > Which precisely is why I made the remark.
| 
| The code you quoted came from the C front end.

I know. That is part of the reason I made the remark.

|  I fail to see the  problem.

The problem is inappropriate use of pedwarn.  If you don't want the
diagnostic to turn into an error if -pedantic, don't use it. Use warning.

-- Gaby



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