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Q69538: C Compiler May Give Wrong Line Number for a C2125 Error

Article: Q69538
Product(s): See article
Version(s): 5.10 6.00 6.00a | 5.10 6.00 6.00a
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | buglist5.10 buglist6.00 buglist6.00a | mspl13_c
Last Modified: 25-FEB-1991

The C compiler will correctly produce a "C2125: allocation exceeds
64K" error for an array larger than 64K that is not declared as huge
or compiled for the huge memory model. However, the line number that
the compiler displays for the error is incorrect. The sample program
below demonstrates this problem.

The following error message shows the incorrect line number generated
when the sample code below is compiled with C version 5.10, 6.00, or
6.00a:

   file.c(7) : error C2125: 'array' : allocation exceeds 64K

The error is actually generated because of the array declaration on
line 4, but the compiler always lists the line with the opening brace
for the main() function as the location of the error (line 7 in this
case).

When the quick compile (/qc) option is specified under C 6.00 or
6.00a, the correct line number (line 4) is generated in the error
message:

   test.c(4) : error C2125: 'array' : allocation exceeds 64K

Note that if you are compiling inside the Programmer's WorkBench
(PWB), the incorrect line number in the error message will cause PWB
to take you to an incorrect line in the source code when the compiler
errors are displayed.

Microsoft has confirmed this to be a problem in C versions 5.10, 6.00,
and 6.00a. We are researching this problem and will post new
information here as it becomes available.

Sample Code
-----------

/* Compile options needed: none
*/

char array[100000];  /* Error should be generated for this line (4) */

void main(void)
{                    /* Error message refers to this line (7) */
}

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