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re PR c++/43327 (ICE in unifiy.c)

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Fix for PR c++/43327

gcc/cp/ChangeLog:
	PR c++/43327
	* pt.c (add_to_template_args): Support NULL ARGS;
	(most_specialized_class): call coerce_template_parms on
	template arguments passed to get_class_bindings. Use
	add_to_template_args.
	(unify): Handle VAR_DECLs.

gcc/testsuite/ChangeLog:
	PR c++/43327
	* g++.dg/other/crash-10.C: New test.
	* g++.dg/other/crash-11.C: New test.

From-SVN: r157745
This commit is contained in:
Dodji Seketeli 2010-03-26 09:20:58 +00:00 committed by Dodji Seketeli
parent 3910807d39
commit 5f431950fa
5 changed files with 88 additions and 0 deletions
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9
gcc/cp/ChangeLog
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@ -1,3 +1,12 @@
2010-03-26 Dodji Seketeli <dodji@redhat.com>
PR c++/43327
* pt.c (add_to_template_args): Support NULL ARGS;
(most_specialized_class): call coerce_template_parms on
template arguments passed to get_class_bindings. Use
add_to_template_args.
(unify): Handle VAR_DECLs.
2010-03-26 Dodji Seketeli <dodji@redhat.com>
* cp-tree.h (get_template_parms_at_level): Change unsigned parm

22
gcc/cp/pt.c
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@ -493,6 +493,9 @@ add_to_template_args (tree args, tree extra_args)
int i;
int j;
if (args == NULL_TREE)
return extra_args;
extra_depth = TMPL_ARGS_DEPTH (extra_args);
new_args = make_tree_vec (TMPL_ARGS_DEPTH (args) + extra_depth);
@ -15055,6 +15058,13 @@ unify (tree tparms, tree targs, tree parm, tree arg, int strict)
/* Matched cases are handled by the ARG == PARM test above. */
return 1;
case VAR_DECL:
/* A non-type template parameter that is a variable should be a
an integral constant, in which case, it whould have been
folded into its (constant) value. So we should not be getting
a variable here. */
gcc_unreachable ();
case TYPE_ARGUMENT_PACK:
case NONTYPE_ARGUMENT_PACK:
{
@ -15937,6 +15947,18 @@ most_specialized_class (tree type, tree tmpl)
--processing_template_decl;
}
partial_spec_args =
coerce_template_parms (DECL_INNERMOST_TEMPLATE_PARMS (tmpl),
add_to_template_args (outer_args,
partial_spec_args),
tmpl, tf_none,
/*require_all_args=*/true,
/*use_default_args=*/true);
if (partial_spec_args == error_mark_node)
return error_mark_node;
spec_args = get_class_bindings (parms,
partial_spec_args,
args);

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2010-03-26 Dodji Seketeli <dodji@redhat.com>
PR c++/43327
* g++.dg/other/crash-10.C: New test.
* g++.dg/other/crash-11.C: New test.
2010-03-25 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/43517

24
gcc/testsuite/g++.dg/other/crash-10.C Normal file
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@ -0,0 +1,24 @@
// Origin: PR c++/43327
// { dg-do compile }
template <typename _T>
struct A
{
template <int _N, int _M> struct B;
template <int _N>
struct B<_N, _T::m>
{
static void f();
};
};
struct C
{
static const int m = 4;
};
void m()
{
A<C>::B<1, 4>::f();
}

27
gcc/testsuite/g++.dg/other/crash-11.C Normal file
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@ -0,0 +1,27 @@
// Origin: PR c++/43327
// { dg-do compile }
template <typename _T>
struct A
{
template <int _N, int _M> struct B;
template <int _N>
struct B<_N, _T::m>
{
static void f();
};
};
struct C
{
static int m;
};
void m()
{
A<C>::B<1, 4>::f(); // { dg-error "incomplete type|not a valid" }
}
int C::m = 4;