test: enable doLint test for gfortran-11

Remember different gfortran versions report diagnostics
with different column numbers v9 vs v11

Author: gnikit

test/linter-provider.test.ts

@@ -34,25 +34,25 @@ suite('Linter integration', () => {
     doc = await workspace.openTextDocument(fileUri);
     await window.showTextDocument(doc);
   });
-  // FIXME: different versions of gfortran report the error at a different column number
+  // different versions of gfortran report the error at a different column number
   // need to implement a the compiler versioning see #523
-  // test('GNU - API call to doLint produces correct diagnostics', async () => {
-  //   const diags = await new FortranLintingProvider()['doLint'](doc);
-  //   const ref: Diagnostic[] = [
-  //     new Diagnostic(
-  //       new Range(new Position(21 - 1, 18 - 1), new Position(21 - 1, 18 - 1)),
-  //       'Syntax error in argument list at (1)',
-  //       DiagnosticSeverity.Error
-  //     ),
-  //     new Diagnostic(
-  //       new Range(new Position(7 - 1, 9 - 1), new Position(7 - 1, 9 - 1)),
-  //       "Type specified for intrinsic function 'size' at (1) is ignored [-Wsurprising]",
-  //       DiagnosticSeverity.Warning
-  //     ),
-  //   ];
+  test('GNU - API call to doLint produces correct diagnostics', async () => {
+    const diags = await new FortranLintingProvider()['doLint'](doc);
+    const ref: Diagnostic[] = [
+      new Diagnostic(
+        new Range(new Position(21 - 1, 18 - 1), new Position(21 - 1, 18 - 1)),
+        'Syntax error in argument list at (1)',
+        DiagnosticSeverity.Error
+      ),
+      new Diagnostic(
+        new Range(new Position(7 - 1, 9 - 1), new Position(7 - 1, 9 - 1)),
+        "Type specified for intrinsic function 'size' at (1) is ignored [-Wsurprising]",
+        DiagnosticSeverity.Warning
+      ),
+    ];
 
-  //   deepStrictEqual(diags, ref);
-  // });
+    deepStrictEqual(diags, ref);
+  });
 
   test('Include path globs & internal variable resolution', async () => {
     const paths = linter['getGlobPathsFromSettings']('linter.includePaths');