From 4f96985d582c4b3cd0228a760e8aedc98488adba Mon Sep 17 00:00:00 2001 From: Eric Botcazou Date: Sun, 11 Dec 2011 10:54:52 +0000 Subject: [PATCH] decl.c (gnat_to_gnu_param): Set the restrict qualifier on references built for parameters which aren't... * gcc-interface/decl.c (gnat_to_gnu_param): Set the restrict qualifier on references built for parameters which aren't specifically by-ref. From-SVN: r182202 --- gcc/ada/ChangeLog | 5 +++++ gcc/ada/gcc-interface/decl.c | 8 ++++++++ 2 files changed, 13 insertions(+) diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog index e8ce2e6902ca..6a2dd2604fa7 100644 --- a/gcc/ada/ChangeLog +++ b/gcc/ada/ChangeLog @@ -1,3 +1,8 @@ +2011-12-11 Eric Botcazou + + * gcc-interface/decl.c (gnat_to_gnu_param): Set the restrict qualifier + on references built for parameters which aren't specifically by-ref. + 2011-12-11 Eric Botcazou * gcc-interface/decl.c (gnat_to_gnu_entity) : If there is an diff --git a/gcc/ada/gcc-interface/decl.c b/gcc/ada/gcc-interface/decl.c index aecbd76b9839..c3774f2a6ba5 100644 --- a/gcc/ada/gcc-interface/decl.c +++ b/gcc/ada/gcc-interface/decl.c @@ -5518,7 +5518,15 @@ gnat_to_gnu_param (Entity_Id gnat_param, Mechanism_Type mech, || (!foreign && default_pass_by_ref (gnu_param_type))))) { + /* We take advantage of 6.2(12) by considering that references built for + parameters whose type isn't by-ref and for which the mechanism hasn't + been forced to by-ref are restrict-qualified in the C sense. */ + bool restrict_p + = !TREE_ADDRESSABLE (gnu_param_type) && mech != By_Reference; gnu_param_type = build_reference_type (gnu_param_type); + if (restrict_p) + gnu_param_type + = build_qualified_type (gnu_param_type, TYPE_QUAL_RESTRICT); by_ref = true; /* In some ABIs, e.g. SPARC 32-bit, fat pointer types are themselves