[Bug translator/13283] script -> C translator incorrect comparison (using ==) of kernel_string() operands

[jistone at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13283

Josh Stone <jistone at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |jistone at redhat dot com

--- Comment #2 from Josh Stone <jistone at redhat dot com> 2011-10-12 17:27:44 UTC ---
The generated code does look suspect to me.

(In reply to comment #0)
>   (void) 
>   ({
>     l->__tmp0 = (((
>     ({ [...]
>       c->locals[c->nesting+1].function_kernel_char.__retvalue;
>     })) == (
>     ({ [...]
>       c->locals[c->nesting+1].function_kernel_char.__retvalue;
>     }))));
>     _stp_printf ("Equal? %llX\n", l->__tmp0);
>     ((int64_t)0LL);
>   });

The left and right sides of the '==' are both expr-statements with the same
__retvalue.  We ought to using a tmp value for both to avoid this issue.

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