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]$
-boris
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