FIX: F1001: ctypes.c When FORTRAN Program Contains $NOLOOPOPT

• Microsoft FORTRAN for OS/2, versions 5.0, 5.1
• Microsoft FORTRAN for MS-DOS, versions 5.0, 5.1

SYMPTOMS

An attempt to compile an application fails and the compiler generates one of the following messages. For FORTRAN version 5.0:

fatal error F1001: Internal Compiler Error
(compiler file '@(#)ctypes.c:1.11', line 1657)

fatal error F1001: Internal Compiler Error
(compiler file '@(#)ctypes.c:1.12', line 1655)

CAUSE

The application source code contains the $NOLOOPOPT metacommand.

RESOLUTION

To work around this problem, perform one of the following two steps:

• Modify the source code to remove the $NOLOOPOPT metacommand.



• Specify the /Od compiler option switch to suppress the optimization.

STATUS

Microsoft has confirmed this to be a problem in FORTRAN versions 5.0 and 5.1 for MS-DOS and OS/2. This problem was corrected in FORTRAN PowerStation.

MORE INFORMATION

The following code example demonstrates this problem.

Sample Code

C Compile options needed: None
$NOLOOPOPT
      END 

Additional query words: 5.00 5.10

Keywords :
Version : :5.0,5.1
Platform :
Issue type :