clang hangs when compiling non-trivial designated initializers

[drhaozhong]

The code is as follows:

static char * name[] = { [0x80000000] = "bar" };
The compilation hangs, and a message is as follows:

.c:2:2: warning: array designators are a C99 extension [-Wc99-designator]
[0x80000000] = "bar"
^~~~~~~~~~~~
.c:2:17: warning: ISO C++11 does not allow conversion from string literal to 'char *' [-Wwritable-strings]
[0x80000000] = "bar"
^
^C

[dm-vodopyanov]

Closing due to #8967 (comment)