diff -Naur webkitgtk-2.32.1.org/Source/WTF/wtf/dtoa/utils.h webkitgtk-2.32.1.sw/Source/WTF/wtf/dtoa/utils.h
--- webkitgtk-2.32.1.org/Source/WTF/wtf/dtoa/utils.h	2022-06-06 15:32:28.840000000 +0000
+++ webkitgtk-2.32.1.sw/Source/WTF/wtf/dtoa/utils.h	2022-06-06 15:33:01.600000000 +0000
@@ -86,7 +86,7 @@
     defined(__powerpc__) || defined(__ppc__) || defined(__ppc64__) || \
     defined(_POWER) || defined(_ARCH_PPC) || defined(_ARCH_PPC64) || \
     defined(__sparc__) || defined(__sparc) || defined(__s390__) || \
-    defined(__SH4__) || defined(__alpha__) || \
+    defined(__SH4__) || defined(__alpha__) || defined(__sw_64__) || \
     defined(_MIPS_ARCH_MIPS32R2) || \
     defined(__AARCH64EL__) || defined(__aarch64__) || defined(__AARCH64EB__) || \
     defined(__riscv) || \
