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bug#20899: Bug in libtool: -fno-strict-alias not passed to linker stage


From: Davin McCall
Subject: bug#20899: Bug in libtool: -fno-strict-alias not passed to linker stage when -flto is used
Date: Thu, 25 Jun 2015 19:58:18 +0100
User-agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.4.0

Hi,

I have discovered what I believe is a bug in libtool: It does not pass the "-fno-strict-aliasing" compilation flag to the link stage. This is not normally a problem, but is certainly a problem is "-flto" (link time optimization) is used. In this case code that works correct only without strict aliasing will incorrectly after being linked.

If you need any further information, please don't hesitate to ask.

Davin






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