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re PR c++/45908 ([C++0x] ICE involving decltype: in tree_low_cst, at tree.h:4114)

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PR c++/45908
	* typeck.c (cp_build_addr_expr_1): Add check for incomplete types in
	code folding offsetof-like computations.

From-SVN: r165031
This commit is contained in:
Eric Botcazou 2010-10-06 14:35:25 +00:00 committed by Eric Botcazou
parent 9c506f103c
commit ccd2b32278
4 changed files with 29 additions and 0 deletions
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6
gcc/cp/ChangeLog
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@ -1,3 +1,9 @@
2010-10-06 Eric Botcazou <ebotcazou@adacore.com>
PR c++/45908
* typeck.c (cp_build_addr_expr_1): Add check for incomplete types in
code folding offsetof-like computations.
2010-10-05 Nicola Pero <nicola.pero@meta-innovation.com>
PR objc++/31125

1
gcc/cp/typeck.c
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@ -4947,6 +4947,7 @@ cp_build_addr_expr_1 (tree arg, bool strict_lvalue, tsubst_flags_t complain)
&& TREE_CODE (argtype) != METHOD_TYPE
&& argtype != unknown_type_node
&& (val = get_base_address (arg))
&& COMPLETE_TYPE_P (TREE_TYPE (val))
&& TREE_CODE (val) == INDIRECT_REF
&& TREE_CONSTANT (TREE_OPERAND (val, 0)))
{

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2010-10-06 Eric Botcazou <ebotcazou@adacore.com>
* g++.dg/cpp0x/pr45908.C: New test.
2010-10-06 Eric Botcazou <ebotcazou@adacore.com>
* gnat.dg/opt6.ad[sb]: New test.

18
gcc/testsuite/g++.dg/cpp0x/pr45908.C Normal file
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@ -0,0 +1,18 @@
// PR c++/45908
// Testcase by Jonathan Wakely <redi@gcc.gnu.org>
// { dg-do compile }
// { dg-options "-std=c++0x" }
struct vector {
struct iterator { };
struct const_iterator { };
iterator begin();
const_iterator begin() const;
};
class block {
vector v;
auto end() const -> decltype(v.begin())
{ return v.begin(); } // { dg-error "conversion" }
};