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Changed by [EMAIL PROTECTED] http://bugzilla.ximian.com/show_bug.cgi?id=79106 --- shadow/79106 2006-08-18 19:44:41.000000000 -0400 +++ shadow/79106.tmp.22797 2006-08-18 19:44:41.000000000 -0400 @@ -0,0 +1,66 @@ +Bug#: 79106 +Product: Mono: Class Libraries +Version: 1.1 +OS: +OS Details: Ubuntu 6.06; mono 1.1.13.6 +Status: NEW +Resolution: +Severity: +Priority: Normal +Component: Mono.POSIX +AssignedTo: [EMAIL PROTECTED] +ReportedBy: [EMAIL PROTECTED] +QAContact: [EMAIL PROTECTED] +TargetMilestone: --- +URL: +Cc: +Summary: Mono.Unix.Native.Syscall.readlink crashes when passed empty StringBuilder + +Description of Problem: + +Calling Mono.Unix.Native.Syscall.readlink with an empty StringBuilder will +crash (not throw an exception, but SIGSEGV). + +Steps to reproduce the problem: + +1) Save the following code to ReadLink.cs +--- +using System; +using System.Text; +using Mono.Unix.Native; + +namespace PipeReader +{ + public class PipeReader + { + static int Main(string[] args) + + { + StringBuilder buf = new StringBuilder(); + Syscall.readlink("/usr/bin/mozilla-firefox", buf); + + Console.WriteLine(buf.ToString()); + + return 0; + } + } +} +---- +2) Change /usr/bin/mozilla-firefox to something that is a symlink +3) Run mcs -r:Mono.Posix.dll ReadLink.cs && mono ReadLink.exe + +Actual Results: + +SIGSEGV or other crash + +Expected Results: + +Either an empty string, an exception, or something less deadly. + +How often does this happen? + +Every time. + +Additional Information: + +Note that calling this with a "new StringBuffer(x);" where x >= 0 will work. _______________________________________________ mono-bugs maillist - [email protected] http://lists.ximian.com/mailman/listinfo/mono-bugs
