SecBSD's official ports repository

www/chromium/patches/patch-v8_src_flags_flags_cc

@@ -0,0 +1,37 @@
+Index: v8/src/flags/flags.cc
+--- v8/src/flags/flags.cc.orig
++++ v8/src/flags/flags.cc
+@@ -12,6 +12,10 @@
+ #include <iomanip>
+ #include <sstream>
+ 
++#if V8_OS_OPENBSD
++#include <sys/mman.h>
++#endif
++
+ #include "src/base/functional.h"
+ #include "src/base/logging.h"
+ #include "src/base/platform/platform.h"
+@@ -31,7 +35,11 @@
+ namespace v8::internal {
+ 
+ // Define {v8_flags}, declared in flags.h.
++#if V8_OS_OPENBSD
++FlagValues v8_flags __attribute__((section(".openbsd.mutable")));
++#else
+ FlagValues v8_flags;
++#endif
+ 
+ // {v8_flags} needs to be aligned to a memory page, and the size needs to be a
+ // multiple of a page size. This is required for memory-protection of the memory
+@@ -822,6 +830,10 @@ void FlagList::FreezeFlags() {
+   // Note that for string flags we only protect the pointer itself, but not the
+   // string storage. TODO(12887): Fix this.
+   base::OS::SetDataReadOnly(&v8_flags, sizeof(v8_flags));
++#if V8_OS_OPENBSD
++  if (mimmutable(&v8_flags, sizeof(v8_flags)) == -1)
++    FATAL("unable to set immutability of v8_flags");
++#endif
+ }
+ 
+ // static