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List:       pcc-list
Subject:    Re: pcc-2010-09-14: internal compiler error on GNU/Linux AMD64
From:       Anders Magnusson <ragge () ludd ! ltu ! se>
Date:       2010-09-20 17:03:54
Message-ID: 4C9793FA.5080903 () ludd ! ltu ! se
[Download RAW message or body]

Now long double should work.

-- Ragge

On 09/15/2010 03:11 AM, Nelson H. F. Beebe wrote:
> The following test program (extracted from a much larger real program)
> compiles on x86 (IA-32) with the pcc-2010-09-14 nightly snapshot, but
> fails on x86_64 (AMD64, EM64T):
>
> % cat bug005.c
> extern void __assert_fail (__const char *__assertion,
> 			   __const char *__file,
> 			   unsigned int __line,
> 			   __const char *__function)
>      __attribute__ ((__nothrow__))
>      __attribute__ ((__noreturn__));
>
> void
> bug003(double zz)
> {
>      ((((-2.1895e-2L)<  zz)&&  (zz<  (2.1895e-2L)))
>       ? (void) (0)
>       : (__assert_fail ("((-2.1895e-2L)<  zz)&&  (zz<  (2.1895e-2L))",
> 		       "foo.h", 222, __PRETTY_FUNCTION__),
> 	(void) (0)));
> }
>
> % pcc -v
> pcc 0.9.9 for x86_64-unknown-linux-gnu, beebe@XXXXXXXX.math.utah.edu Tue Sep 14
> 12:48:49 MDT 2010
>
> % pcc -c bug005.c
> bug005.c, line 18: compiler error: Cannot generate code, node 0x59a70a0 op>=
>
> If the L suffixes are removed from the constants, the code compiles
> successfully.  However, the L suffixes do not precipitate warnings
> about "long double not yet implemented."
>
> Notice that no header files are needed.  The error persists if the
> function prototype for __assert_fail() is removed, so it should be
> relatively easy to track down the source of the error inside the
> compiler.
>
> -------------------------------------------------------------------------------
> - Nelson H. F. Beebe                    Tel: +1 801 581 5254                  -
> - University of Utah                    FAX: +1 801 581 4148                  -
> - Department of Mathematics, 110 LCB    Internet e-mail: beebe@math.utah.edu  -
> - 155 S 1400 E RM 233                       beebe@acm.org  beebe@computer.org -
> - Salt Lake City, UT 84112-0090, USA    URL: http://www.math.utah.edu/~beebe/ -
> -------------------------------------------------------------------------------
>
>    

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