https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88766
Bug ID: 88766
Summary: [9 Regression] Rejects valid? C code since r259641
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: jakub at gcc dot gnu.org, jsm28 at gcc dot gnu.org
Target Milestone: ---
Following code (reduced from gpg2) now fails to compile:
$ cat dns-stuff.i
struct dns_options {
struct {
void *a;
int b;
};
int *socks_host;
char *socks_user;
char *socks_password;
};
static char tor_socks_user[1], tor_socks_password[1];
struct {
int socks_host;
} libdns;
int d;
int *c();
int ax() {
int *az;
int ba;
az = c((&__extension__({
(struct dns_options){{0, 0},
0,
0,
.socks_host = &libdns.socks_host,
.socks_user = tor_socks_user,
.socks_password = tor_socks_password};
})),
&ba);
d = *az;
return 0;
}
$ gcc dns-stuff.i
dns-stuff.i: In function ‘ax’:
dns-stuff.i:19:11: error: lvalue required as unary ‘&’ operand
19 | az = c((&__extension__({
| ^
