File chromium-gcc8-alignof.patch of Package chromium.openSUSE_Leap_42.3_Update

--- chromium-70.0.3510.0.old/mojo/public/c/system/macros.h	2018-08-06 09:15:30.346258487 +0200
+++ chromium-70.0.3510.0/mojo/public/c/system/macros.h	2018-08-06 14:49:23.239735548 +0200
@@ -27,7 +27,13 @@
   (sizeof(void*) == 4 ? 32 : 0)
 
 // Like the C++11 |alignof| operator.
-#if __cplusplus >= 201103L
+#if defined(__GNUC__) && __GNUC__ >= 8
+// GCC 8 has changed the alignof operator to return the minimal alignment
+// required by the target ABI, instead of the preferred alignment.
+// This means that on 32-bit x86, it will return 4 instead of 8.
+// Use __alignof__ instead to avoid this.
+#define MOJO_ALIGNOF(type) __alignof__(type)
+#elif __cplusplus >= 201103L
 #define MOJO_ALIGNOF(type) alignof(type)
 #elif defined(__GNUC__)
 #define MOJO_ALIGNOF(type) __alignof__(type)