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added a test to ensure that for-loop-variables cannot be mutated

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This commit is contained in:
Araq 2018-08-28 12:16:14 +02:00
commit dc5851e873
1 changed files with 15 additions and 0 deletions
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15
tests/varres/tprevent_forloopvar_mutations.nim Normal file
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discard """
line: 15
errmsg: "type mismatch: got <int>"
nimout: '''type mismatch: got <int>
but expected one of:
proc inc[T: Ordinal | uint | uint64](x: var T; y = 1)
for a 'var' type a variable needs to be passed, but 'i' is immutable
expression: inc i
'''
"""
for i in 0..10:
echo i
inc i