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* [Bug middle-end/36791]  New: ICE with constant argument to __builtin_eh_return
@ 2008-07-10 14:44 jfc at mit dot edu
  2008-07-10 15:22 ` [Bug middle-end/36791] " jfc at mit dot edu
  2008-12-27 22:08 ` pinskia at gcc dot gnu dot org
  0 siblings, 2 replies; 4+ messages in thread
From: jfc at mit dot edu @ 2008-07-10 14:44 UTC (permalink / raw)
  To: gcc-bugs

This function causes an ICE in rtl generation:

void g()
{
  __builtin_eh_return(0, 0);
}

The crash happens when either operand to __builtin_eh_return is an integer
constant.  expand_builtin_eh_return calls copy_to_reg on a CONST_INT operand. 
copy_to_reg generates a register with mode VOIDmode.

I think the fix is to change the two calls to copy_to_reg to copy_addr_to_reg
in expand_builtin_eh_return.

This bug seems to be present for many versions and on at least two targets, x86
and SPARC.

Note that with optimization on the same crash may occur if a variable known to
hold an integer constant value is passed as the first argument.


-- 
           Summary: ICE with constant argument to __builtin_eh_return
           Product: gcc
           Version: 4.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jfc at mit dot edu
  GCC host triplet: x86_64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36791


^ permalink raw reply	[flat|nested] 4+ messages in thread
[parent not found: <bug-36791-4@http.gcc.gnu.org/bugzilla/>]

end of thread, other threads:[~2021-08-08 16:50 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2008-07-10 14:44 [Bug middle-end/36791] New: ICE with constant argument to __builtin_eh_return jfc at mit dot edu
2008-07-10 15:22 ` [Bug middle-end/36791] " jfc at mit dot edu
2008-12-27 22:08 ` pinskia at gcc dot gnu dot org
     [not found] <bug-36791-4@http.gcc.gnu.org/bugzilla/>
2021-08-08 16:50 ` pinskia at gcc dot gnu.org

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