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artiq/lit-test/test/inferencer/error_with_var.py

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Python

# RUN: %python -m artiq.compiler.testbench.inferencer +diag %s >%t
# RUN: OutputCheck %s --file-to-check=%t
class contextmgr:
def __enter__(self):
return 1
def __exit__(self, n1, n2, n3):
pass
def foo():
x = "x"
# CHECK-L: ${LINE:+3}: error: cannot unify str with NoneType
# CHECK-L: ${LINE:+2}: note: expression of type str
# CHECK-L: ${LINE:+1}: note: context manager with an '__enter__' method returning NoneType
with contextmgr() as x:
pass