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References: <bug-37048-682@http.gcc.gnu.org/bugzilla/>
Subject: [Bug target/37048] [4.4 Regression] Revision 138835 breaks bootstrap
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------- Comment #3 from hjl dot tools at gmail dot com  2008-08-07 13:47 -------
[hjl@gnu-3 prev-gcc]$ cat ../zlib/x.c
typedef struct gz_stream {
    char *inbuf;
    long offset;
} gz_stream;


void *malloc(__SIZE_TYPE__ size);

long
foo (void * file, long offset)
{
    gz_stream *s = (gz_stream*)file;
        if (s->inbuf == 0) {
            s->inbuf = malloc (2000);
            if (s->inbuf == 0) return -1L;
            __builtin_memset (s->inbuf, 0, 2000);
        }
        while (offset > 0)  {
          unsigned int size = 2000;
            offset -= size;
        }
    return s->offset;
}
[hjl@gnu-3 prev-gcc]$ ./xgcc -B./ -O2 -S ../zlib/x.c
../zlib/x.c: In function âfooâ:
../zlib/x.c:23: error: unrecognizable insn:
(insn 33 84 34 8 ../zlib/x.c:16 (parallel [
            (set (mem:QI (reg:SI 67) [0 S1 A8])
                (subreg:QI (reg:SI 69) 0))
            (set (reg:SI 67)
                (plus:SI (reg:SI 67)
                    (const_int 1 [0x1])))
        ]) -1 (nil))
../zlib/x.c:23: internal compiler error: in extract_insn, at recog.c:1988
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-3 prev-gcc]$


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37048