https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104880
Bug ID: 104880
Summary: regression ICE in expand_expr_addr_expr_1, at
expr.c:8231
Product: gcc
Version: 11.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: dimitar.yordanov at sap dot com
Target Milestone: ---
Hi,
I hit an ICE with the following reduced example:
cat > foo.cc << EOF
class c {
long b;
};
class B {
public:
typedef void *d;
};
class aa {
public:
aa(B::d, char *);
};
class e : public B {
public:
e();
};
__uint128_t f;
struct g {
struct h : c {
h(__uint128_t &i) : c(reinterpret_cast<c &>(i)) {}
__uint128_t ad();
};
};
class n : g {
public:
n(int);
void j() {
__uint128_t a;
h k(a);
__atomic_compare_exchange_n(&f, &a, k.ad(), true, 3, 0);
}
};
int l;
class m : e {
void ar() {
n b(l);
b.j();
}
virtual c bd() { aa(d(&m::ar), ""); }
};
void o() { new m; }
EOF
g++ -mcx16 -O2 -c foo.cc
during RTL pass: expand
foo.cc: In member function ‘void m::ar()’:
foo.cc:29:32: internal compiler error: in expand_expr_addr_expr_1, at
expr.c:8231
29 | __atomic_compare_exchange_n(&f, &a, k.ad(), true, 3, 0);
Regression appeared first with:
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=eb72dc663e9070b281be83a80f6f838a3a878822
Best regards
Dimitar
