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48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
#coding:utf-8
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"""
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ID: issue-6887
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ISSUE: 6887
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TITLE: Invalid SIMILAR TO patterns may lead memory read beyond string limits
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DESCRIPTION:
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On 5.0.0.88 and 4.0.1.2523 expression marked as [ 2 ] raises:
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"SQLSTATE = 22025/Invalid ESCAPE sequence",
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After fix its error became the same as for [ 1 ].
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NB: backslash character must be duplicated when SQL script is launched from Python,
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in contrary to common usage (pass script to ISQL utility from OS command prompt).
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FBTEST: bugs.gh_6887
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"""
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import pytest
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from firebird.qa import *
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db = db_factory()
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test_script = """
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set list on;
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select '1' similar to '1[a-' from rdb$database; ----------------------- [ 1 ]
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-- NOTE: we have to DUPLICATE backslash here otherwise Python
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-- framework will 'swallow' it and error message will differ.
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-- Single backslash must be used if this expression is passed
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-- to ISQL from OS command prompt or using '-i' command switch:
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select '1' similar to '1\\' escape '\\' from rdb$database; ------------ [ 2 ]
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"""
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act = isql_act('db', test_script)
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expected_stderr = """
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Statement failed, SQLSTATE = 42000
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Invalid SIMILAR TO pattern
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Statement failed, SQLSTATE = 42000
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Invalid SIMILAR TO pattern
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"""
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@pytest.mark.version('>=4.0')
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def test_1(act: Action):
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act.expected_stderr = expected_stderr
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act.execute()
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assert act.clean_stderr == act.clean_expected_stderr
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