PSS ID Number: 108346
Article Last Modified on 3/24/2000
The information in this article applies to:
- Microsoft Fortran Powerstation 32 for Windows NT 1.0
This article was previously published under Q108346
SYMPTOMS
An attempt to execute a program that is compiled using the -4Yb, -Ox, and -G5 options and that contains a character substring expression out of range may cause the application to hang.
CAUSE
Compiler options -4Yb and -G5, along with the optimization (option -Ox) cause the compiler to generate incorrect code.
RESOLUTION
This problem does not occur with a different combination of options. Avoid the -Ox optimization option, the -4Yb extended-error-handling option, or use the -G4 processor option instead of -G5.
STATUS
Microsoft has confirmed this to be a problem in FORTRAN PowerStation 32 for Windows NT, version 1.0. This problem was fixed in FORTRAN PowerStation, version 4.0.
MORE INFORMATION
The example program below demonstrates the problem:
Sample Code
C Compile options needed: -4Yb, -Ox and -G5
character m*10 /'1234567890'/
l = 3
write(*,*) l ! putting this inside the loop avoids hang
do while (m(l:l) .ne. 'Q')
l = l + 1
end do
write(*,*) 'L = ', l
write(*,*) 'M = ', m
end
Additional query words: 1.00 lock halt
Keywords: kbbug KB108346
Technology: kbAudDeveloper kbFORTRANPower32100NT kbFortranSearch kbZNotKeyword2
