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-rw-r--r--include/linux/compiler.h13
1 files changed, 11 insertions, 2 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index ee7239ea1583..64fdfe1cfcf0 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -323,9 +323,18 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
#endif
#ifndef __compiletime_error
# define __compiletime_error(message)
-# define __compiletime_error_fallback(condition) \
+/*
+ * Sparse complains of variable sized arrays due to the temporary variable in
+ * __compiletime_assert. Unfortunately we can't just expand it out to make
+ * sparse see a constant array size without breaking compiletime_assert on old
+ * versions of GCC (e.g. 4.2.4), so hide the array from sparse altogether.
+ */
+# ifndef __CHECKER__
+# define __compiletime_error_fallback(condition) \
do { ((void)sizeof(char[1 - 2 * condition])); } while (0)
-#else
+# endif
+#endif
+#ifndef __compiletime_error_fallback
# define __compiletime_error_fallback(condition) do { } while (0)
#endif