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Re: Mainline Regression in gcc.target/i386/pr32268.c
On Feb 16, 2008 8:01 PM, Kaveh R. Ghazi <ghazi@caip.rutgers.edu> wrote:
> From: "Richard Guenther" <richard.guenther@gmail.com>
>
> >> You can trigger the bug in a regular pass by applying the following
> >> noinline patch to the testcase. Thoughts?
> >
> > How does it break? It works for me with noinline and with -fPIC.
> > Richard.
>
> I'm running with mainline revision 132367 on x86_64-unknown-linux-gnu (i.e.
> lp64, not ilp32). When I run the failing testcase under gdb I get:
>
> (gdb) run
> Starting program: /tmp/kg/build/gcc/testsuite/gcc/pr32268.exe
>
> Program received signal SIGABRT, Aborted.
> 0x00002b2ae231d07b in raise () from /lib/libc.so.6
> (gdb) up
> #1 0x00002b2ae231e84e in abort () from /lib/libc.so.6
> (gdb) up
> #2 0x0000000000400575 in main () at
> /tmp/kg/egcc-SVN20080216/gcc/testsuite/gcc.target/i386/pr32268.c:32
> 32 abort();
> (gdb) list
> 27 if (r != ((double) a < (double) b))
> 28 abort();
> 29
> 30 r = test_gt (a, b);
> 31 if (r != ((double) a > (double) b))
> 32 abort();
> 33
> 34 return 0;
> 35 }
> (gdb) p a
> $1 = 0
> (gdb) p b
> $2 = 0
>
>
> "b" should be 1.0.
Ok. So this works for me with r132367, with the original testcase and flags,
with the original testcase and -fPIC and with the modified testcase
and both cases.
Richard.