The GNU compiler can produce two kinds of diagnostics: errors and warnings. Each kind has a different purpose:
warning:to distinguish them from error messages.
Warnings might indicate danger points where you should check to make sure
that your program really does what you intend; or the use of obsolete
features; or the use of nonstandard features of GNU Fortran.
Many warnings are issued only if you ask for them, with one of the
-W options (for instance,
-Wall requests a variety of
Note: Currently, the text of the line and a pointer to the column
is printed in most
See Options to Request or Suppress Warnings, for more detail on these and related command-line options.