Add a header guard to tests/common.h

hirrolot · Jun 23, 2021 · 0645fd0 · 0645fd0
1 parent 9ae4d05
commit 0645fd0
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/tests/common.h b/tests/common.h
@@ -1,3 +1,6 @@
+#ifndef INTERFACE99_TESTS_COMMON_H
+#define INTERFACE99_TESTS_COMMON_H
+
 #include <interface99.h>
 
 #include <stddef.h>
@@ -24,3 +27,5 @@ float b2_impl(long long x);
 
 typedef const char *(*AFnType)(int x, double *restrict y);
 typedef float (*BFnType)(long long x);
+
+#endif // INTERFACE99_TESTS_COMMON_H