Internal compiler error

[system PRIVILEGED account]

2.95.2
mysql-3.22.30-dec-osf4.0f
gcc -DMYSQL_SERVER                      -DDEFAULT_MYSQL_HOME="\"/usr/local\""              -
DDATADIR="\"/usr/local/var\""                   -DSHAREDIR="\"/usr/local/share/mysql\""    -DHAVE_CONFIG_H -I./../include                   -I./../regex                    -I. -I../inc
lude -I.. -I.    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O3 -DDBUG
_OFF   -fno-implicit-templates -c sql_acl.cc
In file included from ../include/global.h:132,
                 from mysql_priv.h:15,
                 from sql_acl.cc:25:
/usr/include/alloca.h:71: warning: declaration of `void * alloca(int)'
usr/include/alloca.h:71: warning: conflicts with built-in declaration `void * alloca(long 
unsigned int)'
sql_acl.cc: In function `int replace_column_table(THD *, GRANT_TABLE *, TABLE *, const LEX_U
SER &, List<LEX_COLUMN> &, const char *, const char *, unsigned int, bool)':
sql_acl.cc:1367: Internal compiler error in `scan_region', at except.c:2566