On 08/30/2010 03:50 PM, Vincent Lefevre wrote: > On 2010-08-30 14:46:57 +0200, Michael Matz wrote: >> int x = x; >> >> is the way GCC offers this idiom since about forever, no need for an >> attribute. Downthread I see that people worry about this generating an >> actual (uninitialized) access to x. They are confused. > > This is not a good idea as "int x = x;" may really generate an > (uninitialized) access to x with other compilers.
Absolutely so. I suspect it's even undefined behaviour in the standard language. There's no way that this idiom should appear anywhere in GNU code. Andrew.
