preprocessor/6021: \^M handling wrong when not followed by ^J

[mrs@wrs.com]

>Number:         6021
>Category:       preprocessor
>Synopsis:       \^M handling wrong when not followed by ^J
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Mar 20 19:56:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Mike Stump
>Release:        unknown-1.0
>Organization:
>Environment:
top of tree, gcc version 3.2 20020318 (experimental)
>Description:
\^M should not advance the line count.  Only \^M^J should.
I like the handling of \^M, leave it alone.

The output for the testcase should be:

char c;
char c;
char c;

int bye;


The reason for this might be somewhat obscure, but if you
fire up up an ASR 33, and try it out, you'll see why.
>How-To-Repeat:
$ ~/net/gcc-sol/gcc/xgcc -B$HOME//net/gcc-sol/gcc/  -E t.c | cat -v
char c;

char c;

char c;


int bye;

and the source:

$ cat -v t.c
ch\^Mar c;
ch\^Mar c;
ch\^Mar c;

int bye;
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: