compiler: fix fallthrough attribute

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

compiler: fix fallthrough attribute
fd1cf1b1 · Christian Brauner · d202c500 · fd1cf1b1
Unverified Commit fd1cf1b1 authored Feb 18, 2021 by Christian Brauner
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compiler.h src/lxc/compiler.h +3 -1

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--- a/src/lxc/compiler.h
+++ b/src/lxc/compiler.h
@@ -19,7 +19,9 @@
 #endif
 #endif
-#ifndef __fallthrough
+#if __GNUC__ >= 7
+#define __fallthrough __attribute__((__fallthrough__))
+#else
 #define __fallthrough /* fall through */
 #endif