[Gc] Can unions 'fool' the garbage collector?
Alec.Orr at wbemsolutions.com
Thu Jun 17 14:16:47 PDT 2004
RH Linux 9.0
GC 6.2 (Still meaning to upgrade to 6.3)
No memory redirection.
enable full debug/enable assertions
Has anyone seen the following behavior with C unions?
Declare a structure S with a union member on the stack
GC_MALLOC returns address X
Address X is assigned to a char* member of the union.
Full World Garbage Collect.
GC_MALLOC returns address X again (i.e the GC thinks address X is not
A subsequent free shows:
GC_debug_free: found previously deallocated (?) object at 0x805deb0 in
object at 0x805deb8 (<smashed>, appr. sz = 5)
Anyone seen anything like this?
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