This assert was put here to make sure that the legacy get_value_range() wasn't being called on stuff that legacy couldn't handle (floats, etc), because the result would ultimately be copied into a value_range_equiv.
In this case, simplify_casted_cond() is calling it on an offset_type which is neither an integer nor a pointer. However, range_of_expr happily punted on it, and then the fallthru code set the range to VARYING. As value_range_equiv can store VARYING types of anything (including types it can't handle), this is fine. The easiest thing to do is remove the assert. If someone from the non legacy world tries to get a non integer/pointer range here, it's going to blow up anyhow because the temporary in get_value_range is int_range_max. PR tree-optimization/106936 gcc/ChangeLog: * value-query.cc (range_query::get_value_range): Remove assert. gcc/testsuite/ChangeLog: * g++.dg/tree-ssa/pr106936.C: New test. --- gcc/testsuite/g++.dg/tree-ssa/pr106936.C | 14 ++++++++++++++ gcc/value-query.cc | 1 - 2 files changed, 14 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/g++.dg/tree-ssa/pr106936.C diff --git a/gcc/testsuite/g++.dg/tree-ssa/pr106936.C b/gcc/testsuite/g++.dg/tree-ssa/pr106936.C new file mode 100644 index 00000000000..c3096e0dd20 --- /dev/null +++ b/gcc/testsuite/g++.dg/tree-ssa/pr106936.C @@ -0,0 +1,14 @@ +// { dg-do compile } */ +// { dg-options "-O2 -fno-tree-ccp -fno-tree-forwprop -fno-tree-fre" } + +namespace testPointerToMemberMiscCasts2 { +struct B { + int f; +}; +struct L : public B { }; +struct R : public B { }; +struct D : public L, R { }; + int B::* pb = &B::f; + int R::* pr = pb; + int D::* pdr = pr; +} diff --git a/gcc/value-query.cc b/gcc/value-query.cc index 201f679a36e..ad80db780c2 100644 --- a/gcc/value-query.cc +++ b/gcc/value-query.cc @@ -167,7 +167,6 @@ range_query::free_value_range_equiv (value_range_equiv *v) const class value_range_equiv * range_query::get_value_range (const_tree expr, gimple *stmt) { - gcc_checking_assert (value_range_equiv::supports_p (TREE_TYPE (expr))); int_range_max r; if (range_of_expr (r, const_cast<tree> (expr), stmt)) return new (equiv_alloc->allocate ()) value_range_equiv (r); -- 2.37.1