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Re: casts to a type other than an integral or enumeration type in aconstant-expression
- From: Andreas Schwab <schwab at suse dot de>
- To: fnf at intrinsity dot com
- Cc: gcc-bugs at gcc dot gnu dot org, ecos-discuss at sources dot redhat dot com
- Date: Wed, 12 Feb 2003 21:53:27 +0100
- Subject: [ECOS] Re: casts to a type other than an integral or enumeration type in aconstant-expression
- References: <200302121853.h1CIrMoo006238@fred.ninemoons.com>
Fred Fish <fnf@public.ninemoons.com> writes:
|> The latest eCos sources no longer build with the latest gcc. The
|> problem can be tracked down to C++ code like the following in eCos:
|>
|> #include <signal.h>
|>
|> void foo (__sighandler_t __sighdl)
|> {
|> switch ((int) __sighdl)
|> {
|> case (int) SIG_DFL:
|> ;
|> case (int) SIG_IGN:
|> ;
|> }
|> }
This code is completely bogus anyway, even if it might be valid. Casting
a pointer to int is dubious at best and will fail miserably if sizeof
(__sighandler_t) > sizeof (int).
Andreas.
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Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, Deutschherrnstr. 15-19, D-90429 Nürnberg
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