gcc 2.97 20001016 (experimental) -- Internal compiler error

[Joe Ramey <ramey at hc dot ti dot com>]

I ran across this bug when trying to compile the latest release of the
UW imap server.  I encountered an error when using gcc-2.95.2 19991024
(release), so I downloaded and installed the latest development
snapshot but it still has trouble with this file.

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Version: gcc version 2.97 20001016 (experimental)
System: sparc-sun-solaris2.6
Configured with:  --enable-languages=c++
Command: gcc -g -c try.c

Output:

try.c: In function `mbx_hdrpos':
try.c:18: Unrecognizable insn:
(insn 24 22 26 (set (reg:SI 109)
        (minus:SI (const_int 4 [0x4])
            (const_int -4096 [0xfffff000]))) -1 (nil)
    (nil))
try.c:18: Internal compiler error in , at recog.c:2162
   Please submit a full bug report.
   See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.


Source code:

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typedef struct mail_stream {
  void *local;                  /* pointer to driver local data */
} MAILSTREAM;



typedef struct mbx_local {
  char *buf;                    /* temporary buffer */
  unsigned long buflen;         /* current size of temporary buffer */
} MBXLOCAL;

unsigned long mbx_hdrpos (MAILSTREAM *stream,unsigned long msgno,
                          unsigned long *size,char **hdr)
{

    ((MBXLOCAL *) stream->local)->buf = (char *) fs_get ((((MBXLOCAL *) stream->local)->buflen = 4096) + 4);
                                /* not found: header consumes entire message */
}
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