Q47836: Incorrect Warning C4413 Issued After Editing Blank Line

Article: Q47836
Product(s): See article
Version(s): 2.00 2.01
Operating System(s): MS-DOS
Keyword(s): ENDUSER | S_QuickASM buglist2.00 buglist2.01 | mspl13_c
Last Modified: 10-OCT-1989

The code below demonstrates a problem with Version 2.00 or 2.01 of the
Microsoft QuickC Compiler's incremental compilation capability. The
compiler may return the following error message when insignificant
editing to the code is done before compiling:

   filename.c(2): warning C4413: 'main' redefined: preceding reference
                  may be invalid.

The following are workarounds:

1. Recompile the file without making any further changes.

2. Turn off incremental compile in the Options.Make.Compiler Flags
   menu.

3. Chose the menu option Make.Rebuild All.

To reproduce the warning, simply compile the following program with
incremental compile enabled. After the clean compile, remove the blank
second line, save the file, and recompile to cause the warning.

void foo(void) {}

void main(void) {foo();}

A second compile does not flag the error. However, if you put the
blank line back in and save the file, recompiling results in the
reoccurrence of the warning.

Microsoft has confirmed this to be a problem with QuickC Versions 2.00
and 2.01. We are researching the problem and will post new information
as it becomes available.

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