forked from kozorizki/binaryen
fcd8dfe7dd
This raises the number of locals accepted by the binary parser to the absolute limit in the spec. A warning is now printed when writing a binary file if the Web limit of 50,000 locals is exceeded. Fixes #6968.
39 lines
1.2 KiB
Python
39 lines
1.2 KiB
Python
import os
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from scripts.test import shared
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from . import utils
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class WebLimitations(utils.BinaryenTestCase):
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def test_many_params(self):
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"""Test that we warn on large numbers of parameters, which Web VMs
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disallow."""
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params = '(param i32) ' * 1001
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module = '''
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(module
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(func $foo %s
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)
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)
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''' % params
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p = shared.run_process(shared.WASM_OPT + ['-o', os.devnull],
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input=module, capture_output=True)
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self.assertIn('Some VMs may not accept this binary because it has a large number of parameters in function foo.',
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p.stderr)
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def test_many_locals(self):
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"""Test that we warn on large numbers of locals, which Web VMs
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disallow."""
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params = '(local i32) ' * 50_001
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module = '''
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(module
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(func $foo %s
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)
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)
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''' % params
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p = shared.run_process(shared.WASM_OPT + ['-o', os.devnull],
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input=module, capture_output=True)
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self.assertIn('Some VMs may not accept this binary because it has a large number of locals in function foo.',
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p.stderr)
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