[Lldb-commits] [lldb] [lldb][Windows] Support OutputDebugString (PR #196395)

[David Spickett via lldb-commits]

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@@ -0,0 +1,57 @@
+// REQUIRES: target-windows
+// RUN: %build --compiler=clang-cl -o %t.exe -- %s
+// RUN: %lldb -f %t.exe -o "log enable windows process" -o r -o q | FileCheck %s
+
+#include <Windows.h>
+#include <string>
+
+int main() {
+  OutputDebugStringA("My string\nnext line\nBut this doesn't have trailing newline|");
+  OutputDebugStringW(L"OutputDebugStringW with some emojis 🦎🐊🐢🐍\n");
+  OutputDebugStringW(L"Another W1\n");
+  OutputDebugStringW(L"Another W2\n");
+  OutputDebugStringA("Some A1\n");
+  OutputDebugStringA("Some A2\n");
+  OutputDebugStringA("Some A3\n");
+
+  std::wstring maxW((1 << 19) - 4, L'A');
+  maxW.push_back(L'B');
+  maxW.push_back(L'\n');
+  OutputDebugStringW(maxW.c_str());
+
+  Sleep(100);
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DavidSpickett wrote:

What is the purpose of the sleep?

I vaguely recall something about the buffer for these messages being finite, so is it to allow time for lldb to read the messages before the next ones overwrite them?

https://github.com/llvm/llvm-project/pull/196395