[ICE] bug in parser: loaded a variable that was not declared about saltwater HOT 1 OPEN

$ run_clang 
union u2 u2a;

unions()
{
    u2a ;
}
<stdin>:3:1: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
unions()
^
<stdin>:5:5: error: incomplete type 'union u2' where a complete type is required
    u2a ;
    ^
<stdin>:1:7: note: forward declaration of 'union u2'
union u2 u2a;
      ^
<stdin>:5:5: warning: expression result unused [-Wunused-value]
    u2a ;
    ^~~
<stdin>:1:10: error: tentative definition has type 'union u2' that is never completed
union u2 u2a;
         ^
<stdin>:1:7: note: forward declaration of 'union u2'
union u2 u2a;
      ^
2 warnings and 2 errors generated.