c: create dummy unreachable block after trap

Reverts 9abe27f6712. This simplies expr codegen, otherwise
would manually have to check `fn->curblk != NULL` repeatedly.
Later passes will easily delete those unreachable blocks

1 files changed, 1 insertions, 0 deletions

diff --git a/c/builtin.c b/c/builtin.c
index 29a3191..9a8a12b 100644
--- a/c/builtin.c
+++ b/c/builtin.c
@@ -83,6 +83,7 @@ static union ref
 trap_comp(struct function *fn, struct expr *ex, bool discard)
 {
    puttrap(fn);
+   useblk(fn, newblk(fn)); /* unreachable block, but simplifies expr codegen */
    return NOREF;
 }