https://bugzilla.novell.com/show_bug.cgi?id=486234
Summary: System.String.LastIndexOf(string, StringComparison)
crashes when using StringComparison.Ordinal on empty
strings
Classification: Mono
Product: Mono: Class Libraries
Version: 2.4.x
Platform: PowerPC
OS/Version: Linux
Status: NEW
Severity: Normal
Priority: P5 - None
Component: CORLIB
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Found By: ---
Hello,
when LastIndexOf("any text", StringComparison.Ordinal) is invoked on an empty
("") string, it will crash instead of returning -1. The reason for this is that
LastIndexOf(string, StringComparison) calls LastIndexOf(string, this.Length -
1, this.Length, comparisonType). this.Length is 0 => this.Length - 1 = MAXINT.
This makes LastIndexOfOrdinal throw an ArgumentOutOfRangeException (for the
startIndex).
I tried replacing the original call by:
if (this.Length >= 1)
return LastIndexOf (value, this.Length - 1, this.Length, comparisonType);
else
return -1;
But strangely, I could not get this to compile (The compiler crashes throwing
exceptions). I'm not sure if this is correct, how should the call behave when
it is invoked on an empty string with an empty string as parameter?
I don't have a Windows system, so I can't check it myself.
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