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re PR c++/49085 (Crash with SIGSEGV during compilation.) 

PR c++/49085
	* semantics.c (finish_offsetof): Complain about incomplete type.

From-SVN: r175758
This commit is contained in:
Jason Merrill 2011-07-01 09:36:17 -04:00 committed by Jason Merrill
parent 6bbec3e156
commit a174e38c09
4 changed files with 26 additions and 0 deletions
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5
gcc/cp/ChangeLog
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@ -1,3 +1,8 @@
2011-07-01 Jason Merrill <jason@redhat.com>
PR c++/49085
* semantics.c (finish_offsetof): Complain about incomplete type.
2011-06-30 Jason Merrill <jason@redhat.com> 2011-06-30 Jason Merrill <jason@redhat.com>
PR c++/49387 PR c++/49387

6
gcc/cp/semantics.c
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@ -3422,6 +3422,12 @@ finish_offsetof (tree expr)
} }
if (REFERENCE_REF_P (expr)) if (REFERENCE_REF_P (expr))
expr = TREE_OPERAND (expr, 0); expr = TREE_OPERAND (expr, 0);
if (TREE_CODE (expr) == COMPONENT_REF)
{
tree object = TREE_OPERAND (expr, 0);
if (!complete_type_or_else (TREE_TYPE (object), object))
return error_mark_node;
}
return fold_offsetof (expr, NULL_TREE); return fold_offsetof (expr, NULL_TREE);
} }

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2011-07-01 Jason Merrill <jason@redhat.com>
PR c++/49085
* g++.dg/template/offsetof2.C: New.
2011-07-01 Kai Tietz <ktietz@redhat.com> 2011-07-01 Kai Tietz <ktietz@redhat.com>
* gcc.dg/tree-ssa/bitwise-sink.c: New test. * gcc.dg/tree-ssa/bitwise-sink.c: New test.

10
gcc/testsuite/g++.dg/template/offsetof2.C Normal file
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@ -0,0 +1,10 @@
// PR c++/49085
template <class T>
struct A // { dg-error "declaration" }
{
int i, j;
int ar[__builtin_offsetof(A,j)]; // { dg-error "incomplete type" }
};
A<int> a;