[Bug target/26457] -fstack-protector leaks the upper bits of RAX

[jakub at gcc dot gnu dot org]

------- Comment #1 from jakub at gcc dot gnu dot org  2006-02-24 15:11 -------
To my knowledge xorl %eax, %eax is just a shorter form of xorq %rax, %rax, 
both clear all 64 bits of %rax.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26457