On Fri, Oct 25, 2019 at 03:47:10PM +0000, Wilco Dijkstra wrote:
> GCC currently defaults to -fcommon.  As discussed in the PR, this is an 
> ancient
> C feature which is not conforming with the latest C standards.  On many 
> targets
> this means global variable accesses have a codesize and performance penalty.
> This applies to C code only, C++ code is not affected by -fcommon.  It is 
> about
> time to change the default.

Does this actually work on all older OSes (etc.) we support?  Only one
way to find out, of course :-)


Segher

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