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PR c++/91845 - ICE with invalid pointer-to-member.

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* expr.c (mark_use): Use error_operand_p.
	* typeck2.c (build_m_component_ref): Check error_operand_p after
	calling mark_[lr]value_use.

	* g++.dg/cpp1y/pr91845.C: New test.

From-SVN: r276102
This commit is contained in:
Marek Polacek 2019-09-24 14:38:53 +00:00 committed by Marek Polacek
parent fe69bee34c
commit fea3397e56
5 changed files with 30 additions and 4 deletions
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7
gcc/cp/ChangeLog
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@ -1,3 +1,10 @@
2019-09-24 Marek Polacek <polacek@redhat.com>
PR c++/91845 - ICE with invalid pointer-to-member.
* expr.c (mark_use): Use error_operand_p.
* typeck2.c (build_m_component_ref): Check error_operand_p after
calling mark_[lr]value_use.
2019-09-23 Paolo Carlini <paolo.carlini@oracle.com>
* pt.c (check_explicit_specialization): Use cp_expr_loc_or_input_loc.

2
gcc/cp/expr.c
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@ -96,7 +96,7 @@ mark_use (tree expr, bool rvalue_p, bool read_p,
{
#define RECUR(t) mark_use ((t), rvalue_p, read_p, loc, reject_builtin)
if (expr == NULL_TREE || expr == error_mark_node)
if (expr == NULL_TREE || error_operand_p (expr))
return expr;
if (reject_builtin && reject_gcc_builtin (expr, loc))

6
gcc/cp/typeck2.c
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@ -2068,12 +2068,12 @@ build_m_component_ref (tree datum, tree component, tsubst_flags_t complain)
tree binfo;
tree ctype;
if (error_operand_p (datum) || error_operand_p (component))
return error_mark_node;
datum = mark_lvalue_use (datum);
component = mark_rvalue_use (component);
if (error_operand_p (datum) || error_operand_p (component))
return error_mark_node;
ptrmem_type = TREE_TYPE (component);
if (!TYPE_PTRMEM_P (ptrmem_type))
{

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2019-09-24 Marek Polacek <polacek@redhat.com>
PR c++/91845 - ICE with invalid pointer-to-member.
* g++.dg/cpp1y/pr91845.C: New test.
2019-09-24 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* gcc.target/aarch64/nosplit-di-const-volatile_1.c: New test.

14
gcc/testsuite/g++.dg/cpp1y/pr91845.C Normal file
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@ -0,0 +1,14 @@
// PR c++/91845 - ICE with invalid pointer-to-member.
// { dg-do compile { target c++14 } }
void non_const_mem_ptr() {
struct A {
};
constexpr A a = {1, 2}; // { dg-error "too many initializers" }
struct B {
int A::*p;
constexpr int g() const {
return a.*p; // { dg-error "use of local variable" }
};
};
}