warn

warn none

Disables all warning messages. This is the same as specifying nowarn.

warn noalignments

Disables warnings about data that is not naturally aligned.

warn declarations

Enables warnings about any undeclared names. The compiler will use the default implicit data typing rules for such undeclared names. The IMPLICIT and IMPLICIT NONE statements override this option.

warn errors

Tells the compiler to change all warning-level messages to error-level messages; this includes warnings about Fortran standards violations.

warn nogeneral

Disables all informational-level and warning-level diagnostic messages.

warn ignore_loc

Enables warnings when %LOC is stripped from an actual argument.

warn interfaces

Tells the compiler to check the interfaces of all SUBROUTINEs called and FUNCTIONs invoked in your compilation against a set of interface blocks stored separately from the source being compiled.

The compiler generates a compile-time message if the interface used to invoke a routine does not match the interface defined in a .mod file external to the source (that is, in a .mod generated by option gen-interfaces as opposed to a .mod file USEd in the source). The compiler looks for these .mods in the current directory or in the directory specified by the include (-I) or -module option. If interface mismatches occur, some will result in a compile-time error, others will only generate a warning.

By default, warn interfaces turns on option gen-interfaces. You can turn off that option by explicitly specifying option /gen-interfaces- (Windows* OS) or -no-gen-interfaces (Linux* OS and OS X*).

warn stderrors

Tells the compiler to change all warning-level messages about Fortran standards violations to error-level messages. This option sets the std03 option (Fortran 2003 standard). If you want Fortran 95 standards violations to become errors, you must specify options warn stderrors and std95.

warn truncated_source

Enables warnings when a source line exceeds the maximum column width in fixed-format source files. The maximum column width for fixed-format files is 72, 80, or 132, depending on the setting of the extend-source option. The warn truncated_source option has no effect on truncation; lines that exceed the maximum column width are always truncated. This option does not apply to free-format source files.

warn uncalled

Enables warnings when a statement function is never called.

warn unused

Enables warnings for variables that are declared but never used.

warn nousage

Disables warnings about questionable programming practices. Questionable programming practices, although allowed, often are the result of programming errors; for example: a continued character or Hollerith literal whose first part ends before the statement field and appears to end with trailing spaces. Note that the /pad-source option can prevent this error.

warn all

This is the same as specifying warn. This option does not set options warn errors or warn stderrors. To enable all the additional checking to be performed and force the severity of the diagnostic messages to be severe enough to not generate an object file, specify warn all warn errors or warn all warn stderrors.

On Windows systems: In the Property Pages, Custom means that diagnostics will be specified on an individual basis.