artiq/lit-test/test/embedding/error_attr_unify.py

# RUN: %python -m artiq.compiler.testbench.embedding +diag %s >%t
# RUN: OutputCheck %s --file-to-check=%t

from artiq.language.core import *
from artiq.language.types import *

class c:
    x = [1, "x"]

@kernel
def entrypoint():
    # CHECK-L: <synthesized>:1: error: cannot unify int(width='a) with str
    # CHECK-NEXT-L: [1, 'x']
    # CHECK-L: ${LINE:+1}: note: expanded from here
    a = c
    # CHECK-L: ${LINE:+1}: note: while inferring a type for an attribute 'x' of a host object
    a.x