Make all required includes explicit

Information as seen by IWYU 0.12 + clang 9 on Linux

1 files changed, 2 insertions, 0 deletions

diff --git a/Macros.h b/Macros.h
index 00413f4e..e42cbe53 100644
--- a/Macros.h
+++ b/Macros.h
@@ -1,6 +1,8 @@
 #ifndef HEADER_Macros
 #define HEADER_Macros
 
+#include <assert.h> // IWYU pragma: keep
+
 #ifndef MINIMUM
 #define MINIMUM(a, b)		((a) < (b) ? (a) : (b))
 #endif