BUG: Assertion Failure with ERR= and END= in READ Statement

• Microsoft Fortran PowerStation for Windows 95 and Windows NT, version 4.0

SYMPTOMS

Using the err= and end= options together in a READ statement and performing a formatted READ using an integer expression in a FORMAT statement causes the following compile-time ASSERT failure message to be generated:

   Assertion failed: 0, file err_genex.c, line 6143

RESOLUTION

Use literal constants instead of integer expressions with edit descriptors in FORMAT statements.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

Sample Code to Illustrate Problem and Workaround

! Compile options needed: none

      integer, parameter :: lenrec = 25
      character*25 rec

      open (unit=1,file='test.dat',status='old')
      read (1,100,end=500,err=500) rec

! 100  format (a25)       ! Use literal values with edit descriptors

      end