Index: chromium-128.0.6613.113/build/config/compiler/BUILD.gn
===================================================================
--- chromium-128.0.6613.113.orig/build/config/compiler/BUILD.gn
+++ chromium-128.0.6613.113/build/config/compiler/BUILD.gn
@@ -1835,12 +1835,16 @@
       cflags_cc += [
         # See comment for -Wno-c++11-narrowing.
         "-Wno-narrowing",
-
-        # -Wno-class-memaccess warns about hash table and vector in blink.
-        # But the violation is intentional.
-        "-Wno-class-memaccess",
       ]
 
+      if (current_cpu != "ppc64") {
+        cflags_cc += [
+          # -Wno-class-memaccess warns about hash table and vector in blink.
+          # But the violation is intentional.
+          "-Wno-class-memaccess",
+        ]
+      }
+
       # -Wunused-local-typedefs is broken in gcc,
       # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63872
       cflags += [ "-Wno-unused-local-typedefs" ]
@@ -1854,7 +1854,9 @@ config("default_warnings") {
 
       # Don't warn about "maybe" uninitialized. Clang doesn't include this
       # in -Wall but gcc does, and it gives false positives.
-      cflags += [ "-Wno-maybe-uninitialized" ]
+      if (current_cpu != "ppc64") {
+        cflags += [ "-Wno-maybe-uninitialized" ]
+      }
       cflags += [ "-Wno-deprecated-declarations" ]
 
       # -Wcomment gives too many false positives in the case a
@@ -1865,7 +1867,9 @@ config("default_warnings") {
 
       # -Wpacked-not-aligned complains all generated mojom-shared-internal.h
       # files.
-      cflags += [ "-Wno-packed-not-aligned" ]
+      if (current_cpu != "ppc64") {
+        cflags += [ "-Wno-packed-not-aligned" ]
+      }
     }
   }