[Bug fortran/40246] ICE on invalid SOURCE= using NULLIFY

[burnus at gcc dot gnu dot org]

------- Comment #3 from burnus at gcc dot gnu dot org  2009-05-26 14:45 -------
> > The following patch to gfc_match_nullify fixes it; however, I think one 
> > should additionally add
> >   gfc_free_expr (new_st.expr1);
> >   gfc_free_expr (new_st.expr2);
> > to prevent a memory leak.
> 
> AFAICT, there is no leak.
> 
> gfc_free_statement (gfc_code *p)

Well, I only see a call to "gfc_free_statement (new_st.next)". Thus only
"new_st->next" and not "new_st" is touched. However, we added two expressions
to new_st, viz expr1 and expr2, which I believe need to be freed.

(Seemingly, we cannot free new_st itself, which would be simpler.)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40246