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  VS Arduino › Visual Micro › Installation & Troubleshooting › Fatal error compiling with function value templates.
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Normal Topic Fatal error compiling with function value templates. (Read 934 times)
M Hotchin
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Fatal error compiling with function value templates.
Nov 24th, 2020 at 1:25am
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I'm getting a fatal error when compiling using function templates.  I created a new project from the 'Blink' sketch, and I added the following code: 
 
template<unsigned int Index> 
void InterruptHandler(void) 
{ 
      //interruptCounters[Index]++; 
}


When compiled, i get the following error: 
 
System.NullReferenceException: Object reference not set to an instance of an object. 
   at Visual.Micro.Processing.Sketch.SketchCompilerCTagsRunner.addPrototype(CTag tag) 
   at Visual.Micro.Processing.Sketch.SketchCompilerCTagsRunner.addPrototypes() 
   at Visual.Micro.Processing.Sketch.SketchCompilerCTagsRunner.TagsParse(String mainFile) 
   at no ctx, String sourceFilePath, Board brd, List`1 includePaths, SketchLibraryListUnSorted knownLibs) 
   at Visual.Micro.MiroAppAPI.SketchCompilerArduino.TryRunCTags(Board brd, List`1 includePaths, SketchLibraryListUnSorted knownLibs) 
   at Visual.Micro.MiroAppAPI.SketchCompilerArduino._compile(SketchBuilder lsketch, String primaryClassName, Boolean verbose, Boolean isDebug) 
   at Visual.Micro.MiroAppAPI.SketchCompilerArduino.compile(SketchBuilder lsketch, String primaryClassName, Boolean verbose, Boolean isDebug) 
   at Visual.Micro.Visual.Studio.Arduino.AddInApp._CompileDo(Object oProject, Boolean IsDebugStartCommand, Boolean isRebuild, Boolean UseGdbIfAvailable) 
   at Visual.Micro.Visual.Studio.Arduino.AddInApp.CompileDo(Object oProject, Boolean IsDebugStartCommand, Boolean isRebuild, Boolean UseGdbIfAvailable) 
   at Visual.Micro.Visual.Studio.Arduino.AddInApp.Compile(Object oProject, Boolean IsDebugStartCommand, Boolean IsRebuild, Boolean UseGdbIfAvailable)

The complete build log is attached.
  
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Tim@Visual Micro
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Re: Fatal error compiling with function value templates.
Reply #1 - Nov 24th, 2020 at 4:18am
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Hi

There is an update due to be pushed to the gallery but it is available here at the top of the list. It includes some fixed in the area your have an issue with.

Please let us know if that resolves

Thanks
  
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M Hotchin
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Re: Fatal error compiling with function value templates.
Reply #2 - Nov 24th, 2020 at 5:07am
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Version 2020.910.15 fails slightly differently: 
 
System.ArgumentNullException: Value cannot be null. 
Parameter name: source 
   at System.Linq.Enumerable.Contains[TSource](IEnumerable`1 source, TSource value, IEqualityComparer`1 comparer) 
   at System.Linq.Enumerable.Contains[TSource](IEnumerable`1 source, TSource value) 
   at Visual.Micro.Processing.Sketch.SketchCompilerCTagsRunner.parseTag(String row) 
   at Visual.Micro.Processing.Sketch.SketchCompilerCTagsRunner.TagsParse(String mainFile) 
   at no ctx, String sourceFilePath, Board brd, List`1 includePaths, SketchLibraryListUnSorted knownLibs) 
   at Visual.Micro.MiroAppAPI.SketchCompilerArduino.TryRunCTags(Board brd, List`1 includePaths, SketchLibraryListUnSorted knownLibs) 
   at Visual.Micro.MiroAppAPI.SketchCompilerArduino._compile(SketchBuilder lsketch, String primaryClassName, Boolean verbose, Boolean isDebug) 
   at Visual.Micro.MiroAppAPI.SketchCompilerArduino.compile(SketchBuilder lsketch, String primaryClassName, Boolean verbose, Boolean isDebug) 
   at Visual.Micro.Visual.Studio.Arduino.AddInApp._CompileDo(Object oProject, Boolean IsDebugStartCommand, Boolean isRebuild, Boolean UseGdbIfAvailable) 
   at Visual.Micro.Visual.Studio.Arduino.AddInApp.CompileDo(Object oProject, Boolean IsDebugStartCommand, Boolean isRebuild, Boolean UseGdbIfAvailable) 
   at Visual.Micro.Visual.Studio.Arduino.AddInApp.Compile(Object oProject, Boolean IsDebugStartCommand, Boolean IsRebuild, Boolean UseGdbIfAvailable)
  
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Simon@Visual Micro
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Re: Fatal error compiling with function value templates.
Reply #3 - Nov 24th, 2020 at 10:08am
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Thanks for the detail, we can replicate this and will update when a full fix is available.

A workaround in the interim, would be to just add a space after the keyword template:
Code
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template <unsigned int Index>
void InterruptHandler(void) {
« Last Edit: Nov 24th, 2020 at 12:54pm by Simon@Visual Micro »  
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Simon@Visual Micro
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Re: Fatal error compiling with function value templates.
Reply #4 - Nov 24th, 2020 at 2:08pm
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The fix is now available in the latest version (20.09.10.16) from the below board:
https://www.visualmicro.com/forums/YaBB.pl?board=VS_ARDUINO_EXT_RELEASES

Let us know if you have any further issues.

  
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