------- Comment #2 from bonzini at gnu dot org 2006-08-07 07:38 -------
This gives an ICE-on-invalid.
template<int i> struct A
{
char d[i];
char &operator [] ( int indx ) { return d[indx]; }
};
struct B
{
A<44> a;
};
int main()
{
return __builtin_offsetof(B, a[0]);
}
Here, fold_offsetof_1 does not expect a CALL_EXPR to be there and dies.
The reason for the reporter's bug is similar but we do not ICE because we have
another INDIRECT_REF because of dereferencing the "char&" reference, and the
tree is like
INDIRECT_REF( CALL_EXPR ( operator[], INDIRECT_REF(null), 0 ) )
fold_offsetof_1 does not expect anything inside the INDIRECT_REF, and blindly
returns 0.
Testing a patch.
--
bonzini at gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |bonzini at gnu dot org
|dot org |
Status|NEW |ASSIGNED
Last reconfirmed|2006-08-06 22:12:50 |2006-08-07 07:38:41
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28573
