Messages in this thread | | | Date | Fri, 31 Oct 2014 14:00:40 -0400 | From | Boris Ostrovsky <> | Subject | Commit 258801563b breaks on old compilers |
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Andy,
Your commit 258801563b ("x86/vdso: Change the PER_CPU segment to use struct desc_struct") in -tip breaks old compilers that don't support initialization of anonymous structures (I think pre-4.6):
FC-64 <build@build-mk2:~/xtt-x86_64/bootstrap> cat anon.c struct bar { struct { int i; }; };
main() { struct bar a = {.i = 0}; }
FC-64 <build@build-mk2:~/xtt-x86_64/bootstrap> gcc --version|head -1 gcc (GCC) 4.4.4 20100503 (Red Hat 4.4.4-2) FC-64 <build@build-mk2:~/xtt-x86_64/bootstrap> gcc anon.c anon.c: In function ‘main’: anon.c:9: error: unknown field ‘i’ specified in initializer FC-64 <build@build-mk2:~/xtt-x86_64/bootstrap>
but
build@build-mk2 bootstrap]$ gcc --version|head -1 gcc (GCC) 4.6.3 20120306 (Red Hat 4.6.3-2) [build@build-mk2 bootstrap]$ gcc anon.c [build@build-mk2 bootstrap]$
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