chromium/chromium-quiche-invalid-offsetof.patch

From 4cea86e76af28b28aa72cb7c69ff7cf242b2bd5d Mon Sep 17 00:00:00 2001
From: Stephan Hartmann <stha09@googlemail.com>
Date: Sat, 27 Jun 2020 12:18:05 +0000
Subject: [PATCH] GCC: supress invalid-offsetof warning

GCC emits a warning if offsetof is used for non-POD
types. However, GCC supports this and prints only
the warning, because it might be nonportable code.
Disable the warning for GCC with a pragma.
---
 net/third_party/quiche/src/quic/core/frames/quic_frame.h   | 7 +++++++
 .../quiche/src/quic/core/frames/quic_inlined_frame.h       | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/net/third_party/quiche/src/quic/core/frames/quic_frame.h b/net/third_party/quiche/src/quic/core/frames/quic_frame.h
index 756b69f..aceba76 100644
--- a/net/third_party/quiche/src/quic/core/frames/quic_frame.h
+++ b/net/third_party/quiche/src/quic/core/frames/quic_frame.h
@@ -110,8 +110,15 @@ struct QUIC_EXPORT_PRIVATE QuicFrame {
 
 static_assert(sizeof(QuicFrame) <= 24,
               "Frames larger than 24 bytes should be referenced by pointer.");
+#if defined(__GNUC__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Winvalid-offsetof"
+#endif
 static_assert(offsetof(QuicStreamFrame, type) == offsetof(QuicFrame, type),
               "Offset of |type| must match in QuicFrame and QuicStreamFrame");
+#if defined(__GNUC__)
+#pragma GCC diagnostic pop
+#endif
 
 // A inline size of 1 is chosen to optimize the typical use case of
 // 1-stream-frame in QuicTransmissionInfo.retransmittable_frames.
diff --git a/net/third_party/quiche/src/quic/core/frames/quic_inlined_frame.h b/net/third_party/quiche/src/quic/core/frames/quic_inlined_frame.h
index 08c4869..804e4bb 100644
--- a/net/third_party/quiche/src/quic/core/frames/quic_inlined_frame.h
+++ b/net/third_party/quiche/src/quic/core/frames/quic_inlined_frame.h
@@ -17,8 +17,15 @@ namespace quic {
 template <typename DerivedT>
 struct QUIC_EXPORT_PRIVATE QuicInlinedFrame {
   QuicInlinedFrame(QuicFrameType type) : type(type) {
+#if defined(__GNUC__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Winvalid-offsetof"
+#endif
     static_assert(offsetof(DerivedT, type) == 0,
                   "type must be the first field.");
+#if defined(__GNUC__)
+#pragma GCC diagnostic pop
+#endif
     static_assert(sizeof(DerivedT) <= 24,
                   "Frames larger than 24 bytes should not be inlined.");
   }
-- 
2.26.2