Messages in this thread | | | Date | Fri, 18 Jul 2014 12:16:23 -0700 | From | "H. Peter Anvin" <> | Subject | Re: linux-next: build warning after merge of the tip tree |
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On 07/17/2014 10:00 PM, Stephen Rothwell wrote: > Hi all, > > After merging the tip tree, today's linux-next build (x86_64 > allmodconfig) produced these warnings: > > In file included from arch/x86/vdso/vdso2c.c:161:0: > arch/x86/vdso/vdso2c.c: In function 'main': > arch/x86/vdso/vdso2c.h:118:6: warning: assuming signed overflow > does not occur when assuming that (X + c) < X is always false > [-Wstrict-overflow] In file included from > arch/x86/vdso/vdso2c.c:165:0: arch/x86/vdso/vdso2c.h:118:6: > warning: assuming signed overflow does not occur when assuming that > (X + c) < X is always false [-Wstrict-overflow] > > Probably introduced by commit e6577a7ce99a ("x86, vdso: Move the > vvar area before the vdso text"). >
This seems toxic.
I always wonder if we shouldn't use -fwrapv for the kernel...
-hpa
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