win: Resolve zero-length array errors on MSVC

minidump/minidump_extensions.h

Index: minidump/minidump_extensions.h
diff --git a/minidump/minidump_extensions.h b/minidump/minidump_extensions.h
index 2ec3403ad68794942b0943729016071e50ce7312..8453f5538f5d9c9213420d52524d26f03f4ae1da 100644
--- a/minidump/minidump_extensions.h
+++ b/minidump/minidump_extensions.h
@@ -25,6 +25,16 @@
 #include "util/misc/uuid.h"
 
 #if defined(COMPILER_MSVC)
+// C4200 is "nonstandard extension used : zero-sized array in struct/union".
+// We would like to globally disable this warning, but unfortunately, the
+// compiler is buggy and only supports disabling it with a pragma, so we can't
+// disable it with other silly warnings in build/common.gypi. See:
+//   https://connect.microsoft.com/VisualStudio/feedback/details/1114440
+#pragma warning(push)
+#pragma warning(disable: 4200)
+#endif  // COMPILER_MSVC
+
+#if defined(COMPILER_MSVC)
 #define PACKED
 #pragma pack(push, 1)
 #else
@@ -460,6 +470,10 @@ struct ALIGNAS(4) PACKED MinidumpCrashpadInfo {
 #endif  // COMPILER_MSVC
 #undef PACKED
 
+#if defined(COMPILER_MSVC)
+#pragma warning(pop)  // C4200
+#endif  // COMPILER_MSVC
+
 }  // namespace crashpad
 
 #endif  // CRASHPAD_MINIDUMP_MINIDUMP_EXTENSIONS_H_