Q43788: M.EXE Editor’s CALLTREE Does Not Support BASIC Source Files

Article: Q43788
Product(s): See article
Version(s): 6.00 6.00b 7.00 | 6.00 6.00b 7.00
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | B_QuickBas SR# S890212-9 | mspl13_basic
Last Modified: 1-FEB-1990

The CALLTREE program used by the Microsoft M.EXE editor does not
produce meaningful results for BASIC source files. The CALLTREE
utility is provided with the Microsoft Editor for use with Microsoft C
and Microsoft Macro Assembler (MASM). It returns a listing of a C or
MASM program's function-calling structure in a tree format. CALLTREE
processes BASIC files with no error messages; however, the results are
not correct.

This information applies to Microsoft BASIC Compiler Versions 6.00 and
6.00b for MS-DOS and MS OS/2, to Microsoft BASIC Professional
Development System (PDS) Version 7.00, and to Microsoft QuickBASIC
Versions 2.00, 2.01, 3.00, 4.00, 4.00b, and 4.50. (Note: The Microsoft
M.EXE editor comes with the BASIC compiler 6.00 and 6.00b and
Microsoft BASIC PDS Version 7.00 but not with any version of the
QuickBASIC package.)

Code Example
------------

The following is the BASIC SOURCE FILE for testing CALLTREE:

DECLARE SUB anysub1 ()
DECLARE SUB anysub3 ()
DECLARE SUB anysub2 ()

CLS
CALL anysub3
END

SUB anysub1
  PRINT "inside of subroutine 1"
END SUB

SUB anysub2
PRINT "Inside of subroutine 2"
CALL anysub1
END SUB

SUB anysub3
  PRINT "Inside of subroutine 3"
  CALL anysub2
END SUB

The following is the CALLTREE OUTPUT for the above BASIC file:

anysub1
anysub3
anysub2

The following is the C SOURCE FILE for testing CALLTREE:

void func1(void)
{
  printf("Inside of function 1\n");
}

void func2(void)
{
  printf("inside of function 2\n");
  func1();
}

void func3(void)
{
  printf("Inside of function 3\n");
  func2();
}

void main(void)
{
  func3();
}

The following is the CALLTREE OUTPUT for the above C program:

func1
|   printf?
func2
|   printf?
|   func1
|   |   printf?
func3
|   printf?
|   func2
|   |   printf?
|   |   func1
|   |   |   printf?
main
|   func3
|   |   printf?
|   |   func2
|   |   |   printf?
|   |   |   func1
|   |   |   |   printf?

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