[Webkit-unassigned] [Bug 209236] REGRESSION(r249808): [GTK] Crash in JSC Config::permanentlyFreeze() on architecture ppc64el

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=209236

--- Comment #31 from Michael Catanzaro <mcatanzaro at gnome.org> ---
Seb, here's your workaround patch for Ubuntu, which should be safe until we figure out a proper upstream fix. It maintains the current behavior except on architectures that are already likely broken:

diff --git a/Source/JavaScriptCore/runtime/JSCConfig.h b/Source/JavaScriptCore/runtime/JSCConfig.h
index 1ae53a56431a..ec67610057b8 100644
--- a/Source/JavaScriptCore/runtime/JSCConfig.h
+++ b/Source/JavaScriptCore/runtime/JSCConfig.h
@@ -34,10 +34,12 @@ class ExecutableAllocator;
 class FixedVMPoolExecutableAllocator;
 class VM;

-#if !OS(WINDOWS)
-constexpr size_t ConfigSizeToProtect = 16 * KB;
-#else
+#if OS(WINDOWS)
 constexpr size_t ConfigSizeToProtect = 4 * KB;
+#elif CPU(PPC64) || CPU(PPC64LE) || CPU(PPC) || CPU(UNKNOWN)
+constexpr size_t ConfigSizeToProtect = 64 * KB;
+#else
+constexpr size_t ConfigSizeToProtect = 16 * KB;
 #endif

 #if ENABLE(SEPARATED_WX_HEAP)

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