@let: bugfix: two free lists are needed.

When functions containing let are compiled, they leave nodes on
the let_free list. These nodes are of the wrong type for re-use
by the compilation of an external @let. That causes a crash.

Secondly, when we compile a function, we free the let_free list.
This is also bad, because if it contains nodes allocated by
the compilation of external lets, we would like those to be
re-used for subsequent external lets after that function, and
not to allocate new variables.

* awkgram.y (let_gfree): New static variable.
(statement): In the aftermath of the @let statement, when
returning the variable nodes to the free list, we now choose
which of the two free lists to return to based on whether
we are inside a function.
(add_let): Try to allocate from let_free if a function is
being compiled, otherwise from let_gfree.

0 files changed, 0 insertions, 0 deletions