opt failure with latest sources

[David Goodwin <goodwin@xxxxxxxxxxxxx>]

I'm getting an Is_True failure with the latest sources for the attached
program. The binary release doesn't have the problem, but it isn't an
Is_True_On compiler, so I can't tell if the problem is with my sources
or not.

I compared the *.B file coming out of the front end, as well as the whirl
at each phase leading up to the failure, and they seem the same for both
compilers.

You may want to release Is_True_On compilers from now on, since that would
help debugging for those working with source, and also help find more bugs
in general.

David


### Assertion failure at line 3859 of
    /be/opt/opt_etable.cxx:
### Compiler Error in file raw.c during Global Optimization -- LPRE: Build
    initial occurrence lists phase:
### EXP_WORKLST::Adjust_combined_types: cr's sign extension flag is
    inconsistentxt-cc INTERNAL ERROR:
    returned non-zero status 1


#include <stdio.h>

unsigned char cstate;

main() {
    int n;

    while(1) {
        n = foo();
        if ( n < 0 ) {
            bar(1);
        }
        if ( n == 0 ) break;
    }
    fprintf( stderr, "index=%d\n", (__int32_t)cstate);
    exit(0);
}