[OE-core] [PATCH 07/10] gcc-sanitizer: Fix build with glibc 2.26

[Burton, Ross]

On 14 June 2017 at 16:23, Khem Raj <raj.khem at gmail.com> wrote:

> sigaltstack is no more exposed by glibc see (bug 21517)
> therefore adjust to use stack_t instead
>
> Use res_state typedef instead of referring to __res_state struct
>

Doesn't work against master:

| In file included from
../../../../../../../../../work-shared/gcc-7.1.0-r0/gcc-7.1.0/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cc:23:0:
|
../../../../../../../../../work-shared/gcc-7.1.0-r0/gcc-7.1.0/libsanitizer/sanitizer_common/sanitizer_linux.h:24:8:
error: using typedef-name 'stack_t' after 'struct'
|  struct stack_t;
|         ^~~~~~~
| In file included from
/data/poky-tmp/master/work/corei7-64-poky-linux/gcc-sanitizers/7.1.0-r0/recipe-sysroot/usr/include/signal.h:322:0,
|                  from
../../../../../../../../../work-shared/gcc-7.1.0-r0/gcc-7.1.0/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cc:17:
|
/data/poky-tmp/master/work/corei7-64-poky-linux/gcc-sanitizers/7.1.0-r0/recipe-sysroot/usr/include/bits/sigstack.h:42:5:
note: 'stack_t' has a previous declaration here
|    } stack_t;
|      ^~~~~~~

Ross
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