Fortran file open status

Which exact compiler do you use? Which options? We will need more code, see minimal reproducible example. We will also need more information about your operating system. This is essentially all the code up until it hangs.

Found a similiar situation on stack overflow that was never resolved, hopefully people finding this now will have a better idea of how they might fix it. If it is a compiler compatibility issue then I repeat that we need your details about the compiler version and options and your operating system. See minimal reproducible example and How to Ask.

A real MWE is not essentially , it is a real piece of code one can compile and try. Compiler bugs often depend on minuscule details. Add a comment. The need to run VS as administrator is coming in my current development path. This stumbling block is unacceptable. For more complete information about compiler optimizations, see our Optimization Notice. File OPEN crashing. NotThatItMatter s Beginner. Wait a second.

How could that error be generated? All forum topics Previous topic Next topic. Some things to check: Does the run time error occur show the line number when it occurs, and is that the line number of the OPEN statement that you showed? Do you have other OPEN statements in your program?

Copy link. Question 1: Yes. Question 2: Yes. Question 3: Yes. Please show the complete error message as displayed. Have you checked the file name that is created by this code? It might result in an invalid name. Larger buffer sizes can cause extra paging.

This specifier denotes file permissions. In the above example, these properties are established by default : sequential access, formatted file, and unwisely no allowance for error during file open. Example 3: Either of these opens file, fort.

In the above example, you get sequential access, formatted file, and no allowance for error during file open. If the file, fort. The file remains after termination. This statement opens a temporary file with a name, such as tmp. OPEN The OPEN statement can connect an existing external file to a unit, create a file and connect it to a unit, or change some specifiers of the connection. Reopen If you open a unit that is already open without specifying a file name or with the previous file name , FORTRAN thinks you are reopening the file to change parameters.

Switch Files If you open a unit that is already open, but you specify a different file name, it is as if you closed with the old file name before the open. The unit number u could be any number in the range and it indicates the file, you may choose any number but every open file in the program must have a unique number.

If the open statement is successful then the ios value returned is zero else a non-zero value. It shows the prior status of the file. A scratch file is created and deleted when closed or the program ends. It is the file access mode.