Sync

Author: anthony-c-martin

src/Resources/ResourceManager/Utilities/ProcessInvoker.cs

@@ -99,16 +99,20 @@ public ProcessOutput Invoke(ProcessInput input)
                 }
             }
 
+            var stderr = new StringBuilder();
+            proc.ErrorDataReceived += (sender, e) =>  stderr.AppendLine(e.Data);
             proc.Start();
-            var stdout = proc.StandardOutput.ReadToEnd();
-            var stderr = proc.StandardError.ReadToEnd();
+    
+            // To avoid deadlocks, use an asynchronous read operation on at least one of the streams.  
+            proc.BeginErrorReadLine();
+            var stdout = proc.StandardOutput.ReadToEnd();  
             proc.WaitForExit();
-
+    
             return new ProcessOutput {
                 Stdout = stdout,
-                Stderr = stderr,
+                Stderr = stderr.ToString(),
                 ExitCode = proc.ExitCode
             };
         }
     }
-}
+}

src/Resources/Resources/ChangeLog.md

@@ -19,6 +19,7 @@
 -->
 
 ## Upcoming Release
+* Fixed deadlock in Bicep CLI execution. [#24133]
 
 ## Version 6.15.0
 * Supported `-SkipClientSideScopeValidation` in RoleAssignment and RoleDefinition related commands. [#22473]