clang-3.4-15.fc21.x86_64 $ echo '#include <glib.h>'|clang $(pkg-config --cflags glib-2.0) -c -o /dev/null -x c - $ _ clang-3.5.0-4.fc21.x86_64 $ echo '#include <glib.h>'|clang $(pkg-config --cflags glib-2.0) -c -o /dev/null -x c - In file included from <stdin>:1: In file included from /usr/include/glib-2.0/glib.h:50: In file included from /usr/include/glib-2.0/glib/ghash.h:33: In file included from /usr/include/glib-2.0/glib/glist.h:32: /usr/include/glib-2.0/glib/gmem.h:76:58: warning: unknown attribute '__alloc_size__' ignored [-Wunknown-attributes] gpointer g_malloc (gsize n_bytes) G_GNUC_MALLOC G_GNUC_ALLOC_SIZE(1); ^ /usr/include/glib-2.0/glib/gmacros.h:67:45: note: expanded from macro 'G_GNUC_ALLOC_SIZE' #define G_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x))) ^ $ echo '#include <glib.h>'|clang $(pkg-config --cflags glib-2.0) -c -o /dev/null -Wno-unknown-attributes -x c - $ _
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No warnings for: clang-3.7.0-1.fc24.x86_64 glib2-devel-2.46.1-2.fc24.x86_64