v8.patch

# 1. Disable pointer compression (limits the maximum number of WasmVMs).
# 2. Don't expose Wasm C API (only Wasm C++ API).
# 3. Fix gcc build error by disabling nonnull warning.
# 4. Allow compiling v8 on macOS 10.15 to 13.0. TODO(dio): Will remove this patch when https://bugs.chromium.org/p/v8/issues/detail?id=13428 is fixed.

diff --git a/BUILD.bazel b/BUILD.bazel
index 4e89f90e7e..3fcb38b3f3 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -157,7 +157,7 @@ v8_int(
 # If no explicit value for v8_enable_pointer_compression, we set it to 'none'.
 v8_string(
     name = "v8_enable_pointer_compression",
-    default = "none",
+    default = "False",
 )
 
 # Default setting for v8_enable_pointer_compression.
diff --git a/bazel/defs.bzl b/bazel/defs.bzl
index e957c0fad3..063627b72b 100644
--- a/bazel/defs.bzl
+++ b/bazel/defs.bzl
@@ -131,6 +131,7 @@ def _default_args():
                 "-Wno-redundant-move",
                 "-Wno-return-type",
                 "-Wno-stringop-overflow",
+                "-Wno-nonnull",
                 # Use GNU dialect, because GCC doesn't allow using
                 # ##__VA_ARGS__ when in standards-conforming mode.
                 "-std=gnu++17",
@@ -151,6 +152,18 @@ def _default_args():
                 "-fno-integrated-as",
             ],
             "//conditions:default": [],
+        }) + select({
+            "@v8//bazel/config:is_macos": [
+                # The clang available on macOS catalina has a warning that isn't clean on v8 code.
+                "-Wno-range-loop-analysis",
+
+                # To supress warning on deprecated declaration on v8 code. For example:
+                # external/v8/src/base/platform/platform-darwin.cc:56:22: 'getsectdatafromheader_64'
+                # is deprecated: first deprecated in macOS 13.0.
+                # https://bugs.chromium.org/p/v8/issues/detail?id=13428.
+                "-Wno-deprecated-declarations",
+            ],
+            "//conditions:default": [],
         }),
         includes = ["include"],
         linkopts = select({
diff --git a/src/wasm/c-api.cc b/src/wasm/c-api.cc
index 4473e205c0..65a6ec7e1d 100644
--- a/src/wasm/c-api.cc
+++ b/src/wasm/c-api.cc
@@ -2247,6 +2247,8 @@ auto Instance::exports() const -> ownvec<Extern> {
 
 }  // namespace wasm
 
+#if 0
+
 // BEGIN FILE wasm-c.cc
 
 extern "C" {
@@ -3274,3 +3276,5 @@ wasm_instance_t* wasm_frame_instance(const wasm_frame_t* frame) {
 #undef WASM_DEFINE_SHARABLE_REF
 
 }  // extern "C"
+
+#endif