[cfi][test] use more robust test patterns #165982
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When test output contains extra data (such as debug logs), tests can become flaky if there are strings like '12': the problem is that after successfully finding '1' in '12', the pattern '^2$' will find a full match in '2' following '1' (mentioned in llvm#165899). To prevent this, use patterns that search for '1' or '2' as standalone strings on their own line.
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When test output contains extra data (such as debug logs), tests can become flaky if there are strings like '12':
the problem is that after successfully finding '1' in '12', the pattern '^2$' will find a full match in '2' following '1' (mentioned in #165899).
To prevent this, use patterns that search for '1' or '2' as standalone strings on their own line.