fix #118, IDE crash when ddemangle is absent or older than v2.072

src/ce_ddemangle.pas

@@ -6,7 +6,7 @@ interface
 
 uses
   Classes, SysUtils, process, forms,
-  ce_processes, ce_common;
+  ce_processes, ce_common, ce_stringrange;
 
 type
 
@@ -35,21 +35,50 @@ var
   demangler: TCEDDemangler;
 
 constructor TCEDDemangler.create;
+var
+  s: string = '.0.';
+  r: TStringRange;
+  v: integer;
 begin
   fList := TStringList.Create;
   fOut  := TStringList.Create;
   fProc := TCEProcess.create(nil);
-  fProc.Executable:= exeFullName('ddemangle' + exeExt);
-  fProc.Options:= [poUsePipes];
-  fProc.OnTerminate:=@procTerminate;
-  fProc.ShowWindow:= swoHIDE;
-  fProc.execute;
-  fActive := true;
+
+  // up to version 2.071 ddemangle cannot be daemon-ized
+  with TProcess.Create(nil) do
+  try
+    Executable := exeFullName('dmd' + exeExt);
+    if Executable.fileExists then
+    begin
+      setLength(s, 128);
+      Parameters.Text:= '--version';
+      Options:= [poUsePipes];
+      ShowWindow:= swoHIDE;
+      execute;
+      output.Read(s[1], 128);
+    end;
+  finally
+    free;
+  end;
+  r := r.create(s);
+  v := r.popUntil('.')^.popFront^.takeUntil('.').yield.toInt;
+
+  fProc.Executable := exeFullName('ddemangle' + exeExt);
+  if  (v >= 72) and fProc.Executable.fileExists then
+  begin
+    fProc.Options:= [poUsePipes];
+    fProc.OnTerminate:=@procTerminate;
+    fProc.ShowWindow:= swoHIDE;
+    fProc.execute;
+    fActive := true;
+  end
+  else fActive := false;
 end;
 
 destructor TCEDDemangler.destroy;
 begin
-  fProc.Terminate(0);
+  if fProc.Running then
+    fProc.Terminate(0);
   fProc.Free;
   fOut.Free;
   fList.Free;

src/ce_infos.pas

@@ -43,10 +43,12 @@ type
     Label1: TLabel;
   private
     procedure RefreshAllStatus;
+    function findCriticalyMissingTool: boolean;
   protected
     procedure SetVisible(Value: Boolean); override;
   public
     constructor create(aOwner: TComponent); override;
+    property hasMissingTools: boolean read findCriticalyMissingTool;
   end;
 
 implementation
@@ -219,7 +221,7 @@ begin
     'optional, the LDC D compiler');
   itm.Parent := boxTools;
   itm.ReAlign;
-  itm := TToolInfo.Construct(self, tikOptional, 'ddemangle',
+  itm := TToolInfo.Construct(self, tikFindable, 'ddemangle',
     'optional, allows to demangle the symbols in the message widget');
   itm.Parent := boxTools;
   itm.ReAlign;
@@ -249,6 +251,23 @@ begin
   Realign;
 end;
 
+function TCEInfoWidget.findCriticalyMissingTool: boolean;
+var
+  i: integer;
+  t: TToolInfo;
+begin
+  result := false;
+  for i := 0 to boxTools.ControlCount -1 do
+  begin
+    if not (boxTools.Controls[i] is TToolInfo) then
+      continue;
+    t := TToolInfo(boxTools.Controls[i]);
+    t.refreshStatus;
+    if (t.fKind in [tikFindable, tikRunning]) and not t.present then
+      result := true;
+  end;
+end;
+
 procedure TCEInfoWidget.RefreshAllStatus;
 var
   i: integer;

src/ce_main.pas

@@ -1794,7 +1794,11 @@ begin
   setSplitterWheelEvent;
 
   if fFirstTimeCoedit then
+  begin
     actFileNewRun.Execute;
+    if fInfoWidg.hasMissingTools then
+      fInfoWidg.showWidget;
+  end;
 
   if fAppliOpts.autoCheckUpdates then
   begin