Move GIT_WARN_UNUSED_RESULT from the public to the private API

Author: lhchavez

include/git2/common.h

@@ -71,24 +71,6 @@ typedef size_t size_t;
 # define GIT_FORMAT_PRINTF(a,b) /* empty */
 #endif
 
-/**
- * Declare that a function's return value must be used.
- *
- * Used mostly to guard against potential silent bugs at runtime. This is
- * recommended to be added to functions that:
- *
- * - Allocate / reallocate memory. This prevents memory leaks or errors where
- *   buffers are expected to have grown to a certain size, but could not be
- *   resized.
- * - Acquire locks. When a lock cannot be acquired, that will almost certainly
- *   cause a data race / undefined behavior.
- */
-#if defined(__GNUC__)
-# define GIT_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
-#else
-# define GIT_WARN_UNUSED_RESULT
-#endif
-
 #if (defined(_WIN32)) && !defined(__CYGWIN__)
 #define GIT_WIN32 1
 #endif

src/common.h

@@ -135,6 +135,24 @@ GIT_INLINE(int) git_error__check_version(const void *structure, unsigned int exp
 }
 #define GIT_ERROR_CHECK_VERSION(S,V,N) if (git_error__check_version(S,V,N) < 0) return -1
 
+/**
+ * Declare that a function's return value must be used.
+ *
+ * Used mostly to guard against potential silent bugs at runtime. This is
+ * recommended to be added to functions that:
+ *
+ * - Allocate / reallocate memory. This prevents memory leaks or errors where
+ *   buffers are expected to have grown to a certain size, but could not be
+ *   resized.
+ * - Acquire locks. When a lock cannot be acquired, that will almost certainly
+ *   cause a data race / undefined behavior.
+ */
+#if defined(__GNUC__)
+# define GIT_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
+#else
+# define GIT_WARN_UNUSED_RESULT
+#endif
+
 /**
  * Initialize a structure with a version.
  */