Fix error autodetection (#69)

* Fix error autodetection

* Fix error autodetection

Author: nohwnd

Profiler/Trace-Script.ps1

@@ -172,8 +172,8 @@ function Trace-Script {
         $ticks = if (0 -ne $total.Ticks) { $total.Ticks } else { 1 }
         $line.Percent = [Math]::Round($line.Duration.Ticks / $ticks, 5, [System.MidpointRounding]::AwayFromZero) * 100
         $line.SelfPercent = [Math]::Round($line.SelfDuration.Ticks / $ticks, 5, [System.MidpointRounding]::AwayFromZero) * 100
-        $line.MemoryPercent = [Math]::Round($line.Memory / $totalMem, 5, [System.MidpointRounding]::AwayFromZero) * 100
-        $line.SelfMemoryPercent = [Math]::Round($line.SelfMemory / $totalMem, 5, [System.MidpointRounding]::AwayFromZero) * 100
+        $line.MemoryPercent = if (0 -ne $totalMem) { [Math]::Round($line.Memory / $totalMem, 5, [System.MidpointRounding]::AwayFromZero) * 100 } else { 100 } 
+        $line.SelfMemoryPercent = if (0 -ne $totalMem) { [Math]::Round($line.SelfMemory / $totalMem, 5, [System.MidpointRounding]::AwayFromZero) * 100 } else { 100 }
         $line
     }
     Write-TimeAndRestart $sw

csharp/Profiler/Tracer.cs

@@ -74,10 +74,11 @@ private static bool HasDifferentTracer(ITracer currentTracer, object newTracer)
     private static void EnsureTracingWasNotCorrupted()
     {
         // Code like Set-PSDebug -Trace 0, or Get-PSBreakPoint | Remove-PSBreakPoint will break the tracing, and we will lose data,
-        // the only line that is allowed to do that is $corruptionAutodetectionVariable = Set-PsDebug -Trace 0
+        // the only line that is allowed to do that is $corruptionAutodetectionVariable = Set-PSDebug -Trace 0
         // This line should be the second to last line that was executed. We re-enable the trace in Profiler, so the last line (::Unregister or ::Unpatch) is
         // captured even when tracing is broken by user.
-        var corrupted = LastTraceItem.Extent?.Text != null && LastTraceItem.Extent.Text != "$corruptionAutodetectionVariable = Set-PsDebug -Trace 0";
+        const string autodetectionText = "$corruptionAutodetectionVariable = Set-PSDebug -Trace 0";
+        var corrupted = LastTraceItem.Extent?.Text != null && !LastTraceItem.Extent.Text.Equals(autodetectionText, StringComparison.OrdinalIgnoreCase);
         if (corrupted)
         {
             throw new InvalidOperationException($"Trace was broken by: {LastTraceItem.Extent.Text} from {LastTraceItem.Extent.File}:{LastTraceItem.Extent.StartLineNumber}");