re PR fortran/87172 (Spurious "Derived type 'c_funptr' at (1) has not been…

re PR fortran/87172 (Spurious "Derived type 'c_funptr' at (1) has not been declared" error after r263782)

fix PR 87172

2018-09-11  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/87172
	* resolve.c (resolve_fl_derived): If a type has the 'use_assoc'
	attribute, then it was declared in another module, so there should be
	no error that it has not been declared.

2018-09-11  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/87172
	* gfortran.dg/iso_c_binding_only_2.f90: New test case.

From-SVN: r264214

gcc/fortran/ChangeLog

+2018-09-11  Janus Weil  <janus@gcc.gnu.org>
+
+	PR fortran/87172
+	* resolve.c (resolve_fl_derived): If a type has the 'use_assoc'
+	attribute, then it was declared in another module, so there should be
+	no error that it has not been declared.
+
 2018-09-11  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/87277

gcc/fortran/resolve.c

@@ -14245,7 +14245,7 @@ resolve_fl_derived (gfc_symbol *sym)
 			  &sym->declared_at))
     return false;
 
-  if (sym->components == NULL && !sym->attr.zero_comp)
+  if (sym->components == NULL && !sym->attr.zero_comp && !sym->attr.use_assoc)
     {
       gfc_error ("Derived type %qs at %L has not been declared",
 		  sym->name, &sym->declared_at);

gcc/testsuite/ChangeLog

+2018-09-11  Janus Weil  <janus@gcc.gnu.org>
+
+	PR fortran/87172
+	* gfortran.dg/iso_c_binding_only_2.f90: New test case.
+
 2018-09-11  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/87277

gcc/testsuite/gfortran.dg/iso_c_binding_only_2.f90

+! { dg-do compile }
+!
+! PR 87172: [9 Regression] Spurious "Derived type 'c_funptr' at (1) has not been declared" error after r263782
+!
+! Contributed by Dominique d'Humieres <dominiq@lps.ens.fr>
+
+module m1
+   use iso_c_binding, only: c_funptr
+end module
+
+module m2
+  use m1
+  use iso_c_binding
+end module