sequential

src/Compiler/Facilities/DiagnosticsLogger.fs

@@ -895,6 +895,7 @@ type StackGuard(maxDepth: int, name: string) =
         GetEnvInteger ("FSHARP_" + name + "StackGuardDepth") StackGuard.DefaultDepth
 
 module MultipleDiagnosticsLoggers =
+
     let Parallel computations =
         let computationsWithLoggers, diagnosticsReady =
             [
@@ -942,6 +943,8 @@ module MultipleDiagnosticsLoggers =
             let results = ResizeArray()
 
             for computation in computations do
+                // Encapsulate computation's diagnostics scope.
+                use _ = new CompilationGlobalsScope()
                 let! result = computation
                 results.Add result
 

src/Compiler/Facilities/DiagnosticsLogger.fsi

@@ -474,12 +474,13 @@ type CompilationGlobalsScope =
 
 module MultipleDiagnosticsLoggers =
 
-    /// Execute computations using Async.Parallel.
-    /// Captures the diagnostics in correct order and keeps a common error count for all computations.
-    /// When done, restores caller's build phase and diagnostics logger, commiting captured diagnostics.
+    /// Runs computations using Async.Parallel.
+    /// Capturing the diagnostics from each separately.
+    /// When done, restores caller's BuildPhase and DiagnosticsLogger
+    /// and commits captured diagnostics preserving the order.
     val Parallel: computations: Async<'T> seq -> Async<'T array>
 
-    /// Execute computations using Async.Sequential.
-    /// Captures the diagnostics in correct order and keeps a common error count for all computations.
-    /// When done, restores caller's build phase and diagnostics logger, commiting captured diagnostics.
+    /// Run computations sequentially starting on current thread
+    /// using caller's DiagnosticsLogger and BuildPhase for each computation.
+    /// When done, restores caller's BuildPhase and DiagnosticsLogger.
     val Sequential: computations: Async<'T> seq -> Async<'T array>