7b91ce fix flockfile-list regression test

Authored and Committed by Szabolcs Nagy 4 years ago
    fix flockfile-list regression test
    
    this test should check if freed stdio memory is clobbered
    after an funlockfile.
    
    the old method was very fragile: it tried to reuse the
    freed memory via a malloc and check if that allocation is
    clobbered. now musl supports malloc interposition so we
    can use that to directly check the required property.
    
        
file modified
+79 -22