unix/coverage.c: Initialize more code_state fields.

jepler · jepler · commit d134cdb9a3f8 · 2025-06-21T08:28:59.000+02:00
When MICROPY_PY_SYS_SETTRACE was enabled, a crash was seen in
the qemu_mips build. It seems likely that this was due to these
added fields not being initialized.

Signed-off-by: Jeff Epler &lt;jepler@gmail.com&gt;
diff --git a/ports/unix/coverage.c b/ports/unix/coverage.c
@@ -588,6 +588,14 @@ static mp_obj_t extra_coverage(void) {
         code_state->sp = &code_state->state[0];
         code_state->exc_sp_idx = 0;
         code_state->old_globals = NULL;
+        #if MICROPY_STACKLESS
+        code_state->prev = NULL;
+        #endif
+        #if MICROPY_PY_SYS_SETTRACE
+        code_state->prev_state = NULL;
+        code_state->frame = NULL;
+        #endif
+
         mp_vm_return_kind_t ret = mp_execute_bytecode(code_state, MP_OBJ_NULL);
         mp_printf(&mp_plat_print, "%d %d\n", ret, mp_obj_get_type(code_state->state[0]) == &mp_type_NotImplementedError);
     }
