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Flip IL offset check - #62049
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jkotas
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Nov 26, 2021
This was referenced Nov 29, 2021
rhirano0715 added a commit
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Mar 9, 2024
If EnsureStorage() is called unconditionally, the array will be expanded, so the position will never become negative. When the conditions inside EnsureStorage() are true, it might be necessary to expand the array, regardless of the comparison between newpos and codepos. https://github.com/dotnet/runtime/blob/6ebc8bd86dbc780b2a2a7daf3ab6020f9104f09e/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.MultipleMatches.Tests.cs#L461-L469 Before the change, in this test case, EnsureStorage() is not called because newpos == codepos == 6 from the first time until an exception occurs. Fixdotnet#62049
stephentoub pushed a commit
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Apr 13, 2024
* Prevent IndexOutOfRangeException in RegexInterpreter This update fixes the IndexOutOfRangeException in RegexInterpreter by enhancing the `TrackPush` and `TrackPush2` methods. The adjustment involves checking the runtrack position before decrementing it, ensuring that it doesn't become negative, which was the root cause of the exception. This prevents potential out-of-range errors when handling large numbers of repetitions in regular expressions. Fix#62094 * Changed to call EnsureStorage() unconditionally. If EnsureStorage() is called unconditionally, the array will be expanded, so the position will never become negative. When the conditions inside EnsureStorage() are true, it might be necessary to expand the array, regardless of the comparison between newpos and codepos. https://github.com/dotnet/runtime/blob/6ebc8bd86dbc780b2a2a7daf3ab6020f9104f09e/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.MultipleMatches.Tests.cs#L461-L469 Before the change, in this test case, EnsureStorage() is not called because newpos == codepos == 6 from the first time until an exception occurs. Fix#62049
matouskozak pushed a commit
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Apr 30, 2024
* Prevent IndexOutOfRangeException in RegexInterpreter This update fixes the IndexOutOfRangeException in RegexInterpreter by enhancing the `TrackPush` and `TrackPush2` methods. The adjustment involves checking the runtrack position before decrementing it, ensuring that it doesn't become negative, which was the root cause of the exception. This prevents potential out-of-range errors when handling large numbers of repetitions in regular expressions. Fixdotnet#62094 * Changed to call EnsureStorage() unconditionally. If EnsureStorage() is called unconditionally, the array will be expanded, so the position will never become negative. When the conditions inside EnsureStorage() are true, it might be necessary to expand the array, regardless of the comparison between newpos and codepos. https://github.com/dotnet/runtime/blob/6ebc8bd86dbc780b2a2a7daf3ab6020f9104f09e/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.MultipleMatches.Tests.cs#L461-L469 Before the change, in this test case, EnsureStorage() is not called because newpos == codepos == 6 from the first time until an exception occurs. Fixdotnet#62049
Ruihan-Yin pushed a commit
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May 30, 2024
* Prevent IndexOutOfRangeException in RegexInterpreter This update fixes the IndexOutOfRangeException in RegexInterpreter by enhancing the `TrackPush` and `TrackPush2` methods. The adjustment involves checking the runtrack position before decrementing it, ensuring that it doesn't become negative, which was the root cause of the exception. This prevents potential out-of-range errors when handling large numbers of repetitions in regular expressions. Fixdotnet#62094 * Changed to call EnsureStorage() unconditionally. If EnsureStorage() is called unconditionally, the array will be expanded, so the position will never become negative. When the conditions inside EnsureStorage() are true, it might be necessary to expand the array, regardless of the comparison between newpos and codepos. https://github.com/dotnet/runtime/blob/6ebc8bd86dbc780b2a2a7daf3ab6020f9104f09e/src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/Regex.MultipleMatches.Tests.cs#L461-L469 Before the change, in this test case, EnsureStorage() is not called because newpos == codepos == 6 from the first time until an exception occurs. Fixdotnet#62049
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Just a small fix for dotnet-pgo's dump/compare commands. cc @dotnet/jit-contrib