From ffeebc4ff1100a14f439314f90651b42e30fb81a Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Wed, 29 May 2019 16:08:57 +0200 Subject: re PR fortran/90329 (Incompatibility between gfortran and C lapack calls) PR fortran/90329 * lang.opt (fbroken-callers): Remove. (ftail-call-workaround, ftail-call-workaround=): New options. * gfortran.h (struct gfc_namespace): Add implicit_interface_calls. * interface.c (gfc_procedure_use): Set implicit_interface_calls for calls to implicit interface procedures. * trans-decl.c (create_function_arglist): Use flag_tail_call_workaround instead of flag_broken_callers. If it is not 2, also require sym->ns->implicit_interface_calls. * invoke.texi (fbroken-callers): Remove documentation. (ftail-call-workaround, ftail-call-workaround=): Document. From-SVN: r271738 --- gcc/fortran/trans-decl.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'gcc/fortran/trans-decl.c') diff --git a/gcc/fortran/trans-decl.c b/gcc/fortran/trans-decl.c index 7cf1ec54..b8e0727 100644 --- a/gcc/fortran/trans-decl.c +++ b/gcc/fortran/trans-decl.c @@ -2520,9 +2520,12 @@ create_function_arglist (gfc_symbol * sym) /* Marking the length DECL_HIDDEN_STRING_LENGTH will lead to tail calls being disabled. Only do that if we potentially have broken callers. */ - if (flag_broken_callers && f->sym->ts.u.cl + if (flag_tail_call_workaround + && f->sym->ts.u.cl && f->sym->ts.u.cl->length - && f->sym->ts.u.cl->length->expr_type == EXPR_CONSTANT) + && f->sym->ts.u.cl->length->expr_type == EXPR_CONSTANT + && (flag_tail_call_workaround == 2 + || f->sym->ns->implicit_interface_calls)) DECL_HIDDEN_STRING_LENGTH (length) = 1; /* Remember the passed value. */ -- cgit v1.1