Segfault when printing AST on module parse error

[Dandigit]

Currently, when c2c is given this invalid C2 code:

module module;

...and asked to print the AST by providing the -a0 flag:

c2c -f file.c2 -a0

...the error is correctly reported, but when c2c tries to print the AST, it results in a segfault:

module module;
       ^
---- AST (module=) /home/dan/invalid.c2 ----

Segmentation fault (core dumped)

I'm on Ubuntu 18.04.1 LTS.

[Dandigit]

I've provided a quick fix in #96.

[bvdberg]

indeed, merged the fix! Thx