Don't violate preconditions in tr1/regex3 #3990
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This test constructs a `regex_iterator` and a `regex_token_iterator` with invalid character ranges. The first occurrence is benign - the test never directs the library to examine the bogus part of the range - but the second case ventures into the land of pure undefined behavior. Caught by ASan. Fixes VSO-1854241 / AB#1854241
strega-nil-ms
approved these changes
Aug 25, 2023
StephanTLavavej
approved these changes
Aug 29, 2023
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I have no idea what this code was thinking - great catch. |
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I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
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This test constructs a
regex_iteratorand aregex_token_iteratorwith invalid character ranges. The first occurrence is benign - the test never directs the library to examine the bogus part of the range - but the second case ventures into the land of pure undefined behavior. Caught by ASan.Fixes VSO-1854241 / AB#1854241