Prevent await inside janet_call - address #1531

This was partially implemented before, but not in the case where the
await or other signal itself was created by a C function. We have to
separate code paths for generating signals - one via normal returns in
janet_vm_continue, and the other via longjump. This adds handling for
the longjump case, as well as improved messaging.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/include/janet.h b/src/include/janet.h
index e9c9429f..c91e5e60 100644
--- a/src/include/janet.h
+++ b/src/include/janet.h
@@ -1261,6 +1261,7 @@ typedef struct {
     /* new state */
     jmp_buf buf;
     Janet payload;
+    int coerce_error;
 } JanetTryState;
 
 /***** END SECTION TYPES *****/