From 820c25c83561085f54268bd536f9d216d03c3e18 Mon Sep 17 00:00:00 2001 From: Harald Anlauf Date: Thu, 17 Nov 2022 21:36:49 +0100 Subject: Fortran: reject NULL actual argument without explicit interface [PR107576] gcc/fortran/ChangeLog: PR fortran/107576 * interface.cc (gfc_procedure_use): Reject NULL as actual argument when there is no explicit procedure interface. gcc/testsuite/ChangeLog: PR fortran/107576 * gfortran.dg/null_actual_3.f90: New test. --- gcc/fortran/interface.cc | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'gcc/fortran/interface.cc') diff --git a/gcc/fortran/interface.cc b/gcc/fortran/interface.cc index 616ae2b..73799c1 100644 --- a/gcc/fortran/interface.cc +++ b/gcc/fortran/interface.cc @@ -4162,6 +4162,14 @@ gfc_procedure_use (gfc_symbol *sym, gfc_actual_arglist **ap, locus *where) return false; } + if (a->expr && a->expr->expr_type == EXPR_NULL) + { + gfc_error ("Passing intrinsic NULL as actual argument at %L " + "requires an explicit interface", &a->expr->where); + a->expr->error = 1; + return false; + } + /* TS 29113, C407b. */ if (a->expr && a->expr->expr_type == EXPR_VARIABLE && symbol_rank (a->expr->symtree->n.sym) == -1) -- cgit v1.1