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x86_64: ensure that dtor pointer passed to app is 0 so it won't be used

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leaving it uninitialized caused unpredictable crashes or worse due to
calling an indeterminate function pointer.
This commit is contained in:
Rich Felker 2011-06-19 08:33:27 -04:00
commit 779165e6d4
1 changed files with 1 additions and 0 deletions
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src/ldso/x86_64/start.s
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@ -5,4 +5,5 @@ _start:
lea 8(%rsp),%rsi
lea _GLOBAL_OFFSET_TABLE_(%rip),%rdx
call __dynlink
xor %edx,%edx
jmp *%rax