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re PR c++/27177 (ICE in build_simple_base_path, at cp/class.c:474)

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PR c++/27177
        * class.c (build_base_path): Don't mess with virtual access if
        skip_evaluation.
        * call.c (standard_conversion): Don't check whether source type
        is complete.

From-SVN: r131855
This commit is contained in:
Jason Merrill 2008-01-25 19:41:49 -05:00 committed by Jason Merrill
parent 31bc8a984f
commit d79ca2074f
4 changed files with 21 additions and 14 deletions
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6
gcc/cp/ChangeLog
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@ -8,6 +8,12 @@
2008-01-25 Jason Merrill <jason@redhat.com>
PR c++/27177
* class.c (build_base_path): Don't mess with virtual access if
skip_evaluation.
* call.c (standard_conversion): Don't check whether source type
is complete.
* decl2.c (is_late_template_attribute): Don't defer attribute
visibility just because the type is dependent.

14
gcc/cp/call.c
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@ -745,19 +745,7 @@ standard_conversion (tree to, tree from, tree expr, bool c_cast_p,
that necessitates this conversion is ill-formed.
Therefore, we use DERIVED_FROM_P, and do not check
access or uniqueness. */
&& DERIVED_FROM_P (TREE_TYPE (to), TREE_TYPE (from))
/* If FROM is not yet complete, then we must be parsing
the body of a class. We know what's derived from
what, but we can't actually perform a
derived-to-base conversion. For example, in:
struct D : public B {
static const int i = sizeof((B*)(D*)0);
};
the D*-to-B* conversion is a reinterpret_cast, not a
static_cast. */
&& COMPLETE_TYPE_P (TREE_TYPE (from)))
&& DERIVED_FROM_P (TREE_TYPE (to), TREE_TYPE (from)))
{
from =
cp_build_qualified_type (TREE_TYPE (to),

3
gcc/cp/class.c
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@ -291,7 +291,8 @@ build_base_path (enum tree_code code,
target_type = code == PLUS_EXPR ? BINFO_TYPE (binfo) : BINFO_TYPE (d_binfo);
/* Do we need to look in the vtable for the real offset? */
virtual_access = (v_binfo && fixed_type_p <= 0);
/* Don't bother inside sizeof; the source type might not be complete. */
virtual_access = (v_binfo && fixed_type_p <= 0) && !skip_evaluation;
/* Do we need to check for a null pointer? */
if (want_pointer && !nonnull)

12
gcc/testsuite/g++.dg/expr/cast9.C Normal file
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@ -0,0 +1,12 @@
// PR c++/27177
struct Z {};
struct A : Z {};
Z* implicitToZ (Z*);
struct B : A
{
static const int i = sizeof(implicitToZ((B*)0));
};