[notes]
This is a regression test for antlr/antlr4#218 "ANTLR4 EOF Related Bug".
https://github.com/antlr/antlr4/issues/218

[type]
Parser

[grammar]
grammar T;
cppCompilationUnit : content+ EOF;
content: anything | {<False()>}? .;
anything: ANY_CHAR;
ANY_CHAR: [_a-zA-Z0-9];

[start]
cppCompilationUnit

[input]
hello