Path: utzoo!attcan!uunet!lll-winken!arisia!tow
From: tow@arisia.Xerox.COM (Rob Tow)
Newsgroups: comp.sys.ibm.pc
Subject: Problem with CodeView in MSC 5.1
Keywords: MSC C CodeView debug printf
Message-ID: <553@arisia.Xerox.COM>
Date: 11 Jan 89 20:13:39 GMT
Organization: Xerox PARC
Lines: 76

I have recently acquired Microsoft C version 5.1 and am running it on an IBM AT
with MSDOS version 3.1  -  and have encountered an apparent problem with 
CodeView.  I would very much appreciate any hints or solutions to the 
following situation.

The problem seems to be that CodeView  -  indeed, the entire system  -  will
hang when it encounters a "printf()" statement.  The screen changes from the
CodeView screen to a shell screen, and the output from the "printf()" 
appears; and then the system freezes.  None of the interrupt or screen 
refresh/mode commands work, nor does the quit command.

The display is a NEC Multisynch color monitor, and it is driven by an
Everex Micro-Enhancer Deluxe Graphics Adapter EV-657.

The program is quite simple  -  two C files.  The two files, and their
associated Make file follow:


/* Test1.c
*/
#include <stdio.h>

main()
{
    fprintf(stderr, "main()\n");
    printf("now invoke'sub()'...\n");
    sub();

    printf("main again!\n");

}



/* Test2.c
*/

#include <stdio.h>

sub()
{
    int a = 42;
    int b = 666;

    printf("sub()\n");
    a += b;
}



# Test.mak
compile=cl /c /Zi /Fs

test1.obj:  test1.c
    $(compile) test1.c

test2.obj:  test2.c
    $(compile) /c test2.c

test.exe:   test1.obj test2.obj
    link /CO test1.obj+test2.obj,test,test;






---

Rob Tow
Member Research Staff
Electronic Document Lab
Xerox PARC
3333 Coyote Hill Drive
Palo Alto, CA 94304
(415)-494-4087