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Re: Prohibit enum <-> int mixup


On 01/31/2011 01:16 PM, Ian Lance Taylor wrote:
Jonathan Wakely<jwakely.gcc@gmail.com> writes:

On 30 January 2011 20:32, Enrico Weigelt wrote:

I'll have to add --std=c++0x parameter - does that have any other side effects I should be aware of ?

-std=c++0x enables lots of things, but if you don't use e.g. variadic templates or the decltype keyword you shouldn't notice. The only thing I can think of affecting valid code is changing the meaning of the 'auto' keyword, which noone sensible uses anyway.

Using -std=c++0x will cause libstdc++ to build in C++0x mode, which last time I checked was not strictly ABI compatible with libstdc++ not built in C++0x mode. So if you link with a dynamic libstdc++.so, you may get in trouble in some complex scenarios.

I don't think the OP was asking about building GCC itself using --std=c++0x, just his programs. In that situation, presumably his libstdc++ was built by his distro and has the 'standard' ABI, right?


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