c070d9 Auto-sync with upstream branch master,

Authored and Committed by djdelorie 2 months ago
    Auto-sync with upstream branch master,
    
    Upstream commit: e74b61c09a2a2ab52153e731225ccba5078659b1
    
    - Disable -Wstringop-overread for some string tests
    - string: Fix GCC 11 `-Werror=stringop-overread' error
    - C11 threads: Fix inaccuracies in testsuite
    - elf.h: Add aarch64 bti/pac dynamic tag constants
    - x86: Set CPU usable feature bits conservatively [BZ #26552]
    
        
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