On 2015-04-07 06:09, Mike Galbraith wrote: > On Tue, 2015-04-07 at 15:56 +0800, Pengfei Yuan wrote: >> I am trying legacy GCC versions. >> But I am not able to try different architectures. > > The point of my reply wasn't to get you to actually test the world ;-) > > I was indirectly pointing out that "works for me" is not good enough > justification. Much checking for safety/benefit required. > Safety especially, -O3 is known to cause perfectly standards-compliant code to break in weird ways in user-space.
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