Use memory compiler in compiler_helper.dart.

pkg/compiler/lib/src/helpers/trace.dart

Index: pkg/compiler/lib/src/helpers/trace.dart
diff --git a/pkg/compiler/lib/src/helpers/trace.dart b/pkg/compiler/lib/src/helpers/trace.dart
index f19b0d0c3b0df9b76dc991091d9889a82a09a7f5..c0f35506429e92ac651397118a5821de633e3eb4 100644
--- a/pkg/compiler/lib/src/helpers/trace.dart
+++ b/pkg/compiler/lib/src/helpers/trace.dart
@@ -131,6 +131,7 @@ class StackTraceLines {
     // Dart VM are:
     //    #n     <method-name> (<uri>:<line-no>:<column-no>)
     //    #n     <method-name> (<uri>:<line-no>)
+    //    #n     <method-name> (<uri>)

[Johnni Winther, 2015/09/09 13:43:07]

Needed to support async bodies.

[sigurdm, 2015/09/10 06:37:51]

Perhaps write that in a comment

[Johnni Winther, 2015/09/11 10:42:06]

Done.

     // in which '<anonymous closure>' is the name used for an (unnamed) function
     // expression.
     for (String line in stackTrace.split('\n')) {
@@ -154,16 +155,33 @@ class StackTraceLines {
           lineNo = line.substring(nextToLastColon+1, lastColon);
           columnNo = line.substring(lastColon+1, rightParenPos);
           try {
-            int.parse(lineNo);
+            int.parse(columnNo);
+            try {
+              int.parse(lineNo);
+            } on FormatException {
+              // Only line number.
+              lineNo = columnNo;
+              columnNo = '';
+              nextToLastColon = lastColon;
+            }
           } on FormatException {
-            lineNo = columnNo;
+            // No column number nor line number.
+            lineNo = '';
             columnNo = '';
-            nextToLastColon = lastColon;
+            nextToLastColon = rightParenPos;
           }
         } else {
           lineNo = line.substring(lastColon+1, rightParenPos);
           columnNo = '';
-          nextToLastColon = lastColon;
+          try {
+            int.parse(lineNo);
+            nextToLastColon = lastColon;
+          } on FormatException {
+            // No column number nor line number.
+            lineNo = columnNo;
+            columnNo = '';
+            nextToLastColon = rightParenPos;
+          }
         }
 
         if (lineNo.length > maxLineNoLength) {