[Bug fortran/47978] [OOP] Invalid INTENT in overriding TBP not detected

[janus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47978

--- Comment #4 from janus at gcc dot gnu.org 2011-09-10 11:30:21 UTC ---
Relevant F08 standard quote:

4.5.7.3 Type-bound procedure overriding

1 If a specific type-bound procedure specified in a type definition has the same
binding name as a type-bound procedure from the parent type then the binding
specified in the type definition overrides the one from the parent type.

2 The overriding and overridden type-bound procedures shall satisfy the
following conditions.
 * Either both shall have a passed-object dummy argument or neither shall. If
the overridden type-bound procedure is pure then the overriding one shall also
be pure.
 * Either both shall be elemental or neither shall.
 * They shall have the same number of dummy arguments.
 * Passed-object dummy arguments, if any, shall correspond by name and
position.
 * Dummy arguments that correspond by position shall have the same names and
characteristics, except for the type of the passed-object dummy arguments.
 * Either both shall be subroutines or both shall be functions having the same
result characteristics (12.3.3).
 * If the overridden type-bound procedure is PUBLIC then the overriding one
shall not be PRIVATE.