c: SYM expr should store decl ref as an index, not pointer

Because envdecls (now declsbuf) can be resized and invalidate those
pointers. I missed this because the default initialization size of that
buffer (and the fact that it would mostly only manifest with
function-local expressions) made it not really come up in practice.
Silly

1 files changed, 1 insertions, 1 deletions

diff --git a/c/eval.c b/c/eval.c
index 746bc64..d227c91 100644
--- a/c/eval.c
+++ b/c/eval.c
@@ -158,7 +158,7 @@ unop(struct expr *ex, enum evalmode mode)
 static bool
 isglobsym(const struct expr *ex)
 {
-   return ex->t == ESTRLIT || (ex->t == ESYM && ex->sym && (ex->sym->scls & (SCSTATIC | SCEXTERN)));
+   return ex->t == ESTRLIT || (ex->t == ESYM && ex->ty.t < NTYPETAG && (declsbuf.p[ex->decl].scls & (SCSTATIC | SCEXTERN)));
 }
 
 static bool