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[Bug libc/21517] New: struct sigaltstack namespace


https://sourceware.org/bugzilla/show_bug.cgi?id=21517

            Bug ID: 21517
           Summary: struct sigaltstack namespace
           Product: glibc
           Version: 2.25
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: jsm28 at gcc dot gnu.org
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

glibc defines the stack_t type with the tag struct sigaltstack.  This is not
permitted by POSIX; sigaltstack is only reserved with file scope in the
namespace of ordinary identifiers, not the tag namespace, and in the case where
stack_t is obtained from ucontext.h rather than signal.h, it's not reserved
with file scope at all.

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