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re PR c++/48281 ([C++0x] internal compiler error: in record_reference, at cgraphbuild.c:60)

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PR c++/48281
	* semantics.c (finish_compound_literal): Do put static/constant
	arrays in static variables.

From-SVN: r171741
This commit is contained in:
Jason Merrill 2011-03-30 14:07:09 -04:00 committed by Jason Merrill
parent 88d37ae679
commit a63940ba49
4 changed files with 50 additions and 1 deletions
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4
gcc/cp/ChangeLog
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@ -1,5 +1,9 @@
2011-03-30 Jason Merrill <jason@redhat.com>
PR c++/48281
* semantics.c (finish_compound_literal): Do put static/constant
arrays in static variables.
* call.c (convert_like_real) [ck_list]: Build up the
initializer_list object directly.
* decl.c (build_init_list_var_init): Adjust.

29
gcc/cp/semantics.c
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@ -2335,7 +2335,34 @@ finish_compound_literal (tree type, tree compound_literal)
if (TREE_CODE (type) == ARRAY_TYPE)
cp_complete_array_type (&type, compound_literal, false);
compound_literal = digest_init (type, compound_literal);
return get_target_expr (compound_literal);
/* Put static/constant array temporaries in static variables, but always
represent class temporaries with TARGET_EXPR so we elide copies. */
if ((!at_function_scope_p () || CP_TYPE_CONST_P (type))
&& TREE_CODE (type) == ARRAY_TYPE
&& initializer_constant_valid_p (compound_literal, type))
{
tree decl = create_temporary_var (type);
DECL_INITIAL (decl) = compound_literal;
TREE_STATIC (decl) = 1;
if (literal_type_p (type) && CP_TYPE_CONST_NON_VOLATILE_P (type))
{
/* 5.19 says that a constant expression can include an
lvalue-rvalue conversion applied to "a glvalue of literal type
that refers to a non-volatile temporary object initialized
with a constant expression". Rather than try to communicate
that this VAR_DECL is a temporary, just mark it constexpr. */
DECL_DECLARED_CONSTEXPR_P (decl) = true;
DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (decl) = true;
TREE_CONSTANT (decl) = true;
}
cp_apply_type_quals_to_decl (cp_type_quals (type), decl);
decl = pushdecl_top_level (decl);
DECL_NAME (decl) = make_anon_name ();
SET_DECL_ASSEMBLER_NAME (decl, DECL_NAME (decl));
return decl;
}
else
return get_target_expr (compound_literal);
}
/* Return the declaration for the function-name variable indicated by

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2011-03-30 Jason Merrill <jason@redhat.com>
* g++.dg/cpp0x/initlist46.C: New.
2011-03-30 Richard Sandiford <richard.sandiford@linaro.org>
PR target/47551

14
gcc/testsuite/g++.dg/cpp0x/initlist46.C Normal file
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@ -0,0 +1,14 @@
// PR c++/48281
// { dg-options "-std=c++0x -O2" }
// { dg-do run }
#include <initializer_list>
typedef std::initializer_list<int> int1;
typedef std::initializer_list<int1> int2;
static int2 ib = {{42,2,3,4,5},{2,3,4,5,1},{3,4,5,2,1}};
int main()
{
return *(ib.begin()->begin()) != 42;
}