From 20ecde678adfcc6ce3c4a4730e43d4f360912b82 Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Wed, 21 Sep 2016 10:53:43 +0200
Subject: [PATCH] Add more informative error for processes dying in startup.
 Refs #358

---
 renderdoc/os/win32/win32_process.cpp | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/renderdoc/os/win32/win32_process.cpp b/renderdoc/os/win32/win32_process.cpp
index 80cfc95b1..48a5fc6ec 100644
--- a/renderdoc/os/win32/win32_process.cpp
+++ b/renderdoc/os/win32/win32_process.cpp
@@ -309,7 +309,27 @@ uintptr_t FindRemoteDLL(DWORD pid, wstring libName)
 
   if(ret == 0)
   {
-    RDCERR("Couldn't find module '%ls' among %d modules", libName.c_str(), numModules);
+    HANDLE h = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
+
+    DWORD exitCode = 0;
+
+    if(h)
+      GetExitCodeProcess(h, &exitCode);
+
+    if(h == NULL || exitCode != STILL_ACTIVE)
+    {
+      RDCERR(
+          "Error injecting into remote process with PID %u which is no longer available.\n"
+          "Possibly the process has crashed during early startup?",
+          pid);
+    }
+    else
+    {
+      RDCERR("Couldn't find module '%ls' among %d modules", libName.c_str(), numModules);
+    }
+
+    if(h)
+      CloseHandle(h);
   }
 
   CloseHandle(hModuleSnap);