This C file causes an internal error in GCC 2.95 on Alpha
Jesse Perry
jap@unx.dec.com
Mon Sep 27 21:39:00 GMT 1999
Hello,
I'm using GCC 2.95 on an Alpha running Tru64 UNIX V4.0F. Below is
a small C file that causes an internal error. The code is cut down
from a much larger file where the problem initially occurred. As
a result, the code is now non-functional gibberish. But it still
yields the same compiler error as before.
I issued this command:
$ gcc -v --save-temps -O2 gcc_error.c
The command produced this output:
Reading specs from /usr/local/lib/gcc-lib/alpha-dec-osf4.0b/2.95/specs
gcc version 2.95 19990728 (release)
/usr/local/lib/gcc-lib/alpha-dec-osf4.0b/2.95/cpp -lang-c -v -D__GNUC__=2 -D__GNUC_MINOR__=95 -Dunix -D__osf__ -D_LONGLONG -DSYSTYPE_BSD -D_SYSTYPE_BSD -D__unix__ -D__osf__ -D_LONGLONG -D__SYSTYPE_BSD__ -D_SYSTYPE_BSD -D__unix -D__SYSTYPE_BSD -Asystem(unix) -Asystem(xpg4) -D__OPTIMIZE__ -D__LANGUAGE_C__ -D__LANGUAGE_C -DLANGUAGE_C -Acpu(alpha) -Amachine(alpha) -D__alpha -D__alpha__ -D__alpha_ev4__ -Acpu(ev4) gcc_error.c gcc_error.i
GNU CPP version 2.95 19990728 (release)
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/local/lib/gcc-lib/alpha-dec-osf4.0b/2.95/../../../../alpha-dec-osf4.0b/include
/usr/local/lib/gcc-lib/alpha-dec-osf4.0b/2.95/include
/usr/include
End of search list.
The following default directories have been omitted from the search path:
/usr/local/lib/gcc-lib/alpha-dec-osf4.0b/2.95/../../../../include/g++-3
End of omitted list.
/usr/local/lib/gcc-lib/alpha-dec-osf4.0b/2.95/cc1 gcc_error.i -quiet -dumpbase gcc_error.c -O2 -version -o gcc_error.s
GNU C version 2.95 19990728 (release) (alpha-dec-osf4.0b) compiled by GNU C version 2.95 19990728 (release).
gcc_error.c: In function `process_files':
gcc_error.c:130: Internal compiler error in `gen_reload_inqi', at insn-emit.c:5493
Please submit a full bug report.
See <URL: http://egcs.cygnus.com/faq.html#bugreport > for instructions.
Below are the C file and the preprocessor output produced by the
gcc command line given above. If I can help further with this,
please email jap@unx.dec.com or phone 732-577-6194.
-Jesse Perry
----- Cut here for gcc_error.c
#include <stdio.h>
typedef struct stdio_bitio_state
{
FILE *File;
unsigned char Buff;
unsigned char Btg;
}
stdio_bitio_state;
#define ENCODE_START(f) \
{ \
FILE *__outfile = f; \
register unsigned char __buff = 0; \
register unsigned char __btg = sizeof(__buff)*8;
#define ENCODE_CONTINUE(b) \
{ \
FILE *__outfile = (b).File; \
register unsigned char __buff = (b).Buff; \
register unsigned char __btg = (b).Btg;
#define ENCODE_BIT(b) \
do { \
__btg--; \
if (b) __buff |= (1 << __btg); \
if (!__btg) \
{ \
putc(__buff, __outfile); \
__buff = 0; \
__btg = sizeof(__buff)*8; \
} \
} while(0)
#define ENCODE_PAUSE(b) \
(b).File = __outfile; \
(b).Buff = __buff; \
(b).Btg = __btg; \
}
#define DECODE_START(f) \
{ \
FILE *__infile = f; \
register unsigned char __buff = 0; \
register unsigned char __btg = 0;
#define DECODE_CONTINUE(b) \
{ \
FILE *__infile = (b).File; \
register unsigned char __buff = (b).Buff; \
register unsigned char __btg = (b).Btg;
#define DECODE_BIT (__btg ? (__buff >> --__btg) & 1 : \
(__buff = getc(__infile), (feof(__infile) ? \
(abort(), 0) : \
(__btg = sizeof(__buff)*8, (__buff >> --__btg) & 1))))
#define DECODE_PAUSE(b) \
(b).File = __infile; \
(b).Buff = __buff; \
(b).Btg = __btg; \
}
typedef struct invf_info
{
unsigned long doc_num;
}
invf_info;
extern void * malloc (size_t);
void
process_files (void)
{
FILE *in, *out;
unsigned long in_k;
unsigned long bits_out, i, j;
stdio_bitio_state out_buf, in_buf;
DECODE_START (in)
DECODE_PAUSE (in_buf)
ENCODE_START (out)
ENCODE_PAUSE (out_buf)
for (i = 0; i < in_k; i++)
{
unsigned long blk, p;
unsigned long fcnt, doc_num;
unsigned long next_mjr_dn, kd;
invf_info *ii;
fread ((char *) &fcnt, sizeof (u_char), 1, in);
fread ((char *) &fcnt, sizeof (fcnt), 1, in);
fread ((char *) &blk, sizeof (blk), 1, in);
fwrite ((char *) &bits_out, sizeof (bits_out), 1, out);
blk = BIO_Bblock_Init (kd, fcnt);
if (!(ii = (invf_info *) malloc (sizeof (invf_info) * p)))
FatalError (1, "Unable to allocate memory for \"ii\"\n");
next_mjr_dn = 0;
DECODE_CONTINUE (in_buf)
bblock_decode (next_mjr_dn, j);
bblock_length (next_mjr_dn - doc_num, blk, j);
foo (doc_num, blk, next_mjr_dn);
DECODE_BIT;
DECODE_PAUSE (in_buf)
ENCODE_CONTINUE (out_buf)
for (j = 0; j < blk; j++, kd++)
{
int num = ii[j + in_k - 1].doc_num - kd;
foo (blk, j, bits_out);
foo (num, kd, bits_out);
foo (ii[j].doc_num - doc_num, blk, bits_out);
spam (ii[j].doc_num, bits_out);
}
while (__btg != 8)
ENCODE_BIT (0);
ENCODE_PAUSE (out_buf)
}
}
----- End of gcc_error.c
----- Cut here for gcc_error.i.bz2.uue
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end
----- End of gcc_error.i.bz2.uue
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