f0892be Auto-sync with upstream branch release/2.28/master

Authored and Committed by djdelorie 5 years ago
    Auto-sync with upstream branch release/2.28/master
    
    Upstream commit: b8dd0f42780a3133c02f064a2c0c5c4e7ab61aaa
    
    - malloc: tcache double free check (#1647395)
    
        
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