3 files changed, 11 insertions, 0 deletions
diff --git a/src/mongo/platform/compiler.h b/src/mongo/platform/compiler.h
index af3e0b20dc3..713cb11379d 100644
--- a/src/mongo/platform/compiler.h
+++ b/src/mongo/platform/compiler.h
@@ -150,6 +150,13 @@
  *    Tells the compiler that a class defines a type for which checking results is necessary.  Types
  *    thus defined turn functions returning them into "must check results" style functions.  Preview
  *    of the `[[nodiscard]]` C++17 attribute.
+ *
+ *
+ * MONGO_WARN_UNUSED_RESULT_FUNCTION
+ *
+ *    Tells the compiler that a function returns a value for which consuming the result is
+ *    necessary.  Functions thus defined are "must check results" style functions.  Preview of the
+ *    `[[nodiscard]]` C++17 attribute.
  */
 
 
diff --git a/src/mongo/platform/compiler_gcc.h b/src/mongo/platform/compiler_gcc.h
index a58a72a2d11..913dace45a0 100644
--- a/src/mongo/platform/compiler_gcc.h
+++ b/src/mongo/platform/compiler_gcc.h
@@ -45,6 +45,7 @@
 // MONGO_WARN_UNUSED_RESULT is only supported in the semantics we want for classes in Clang, not in
 // GCC < 7.
 #define MONGO_WARN_UNUSED_RESULT_CLASS [[gnu::warn_unused_result]]
+#define MONGO_WARN_UNUSED_RESULT_FUNCTION [[gnu::warn_unused_result]]
 #else
 #define MONGO_COMPILER_COLD_FUNCTION __attribute__((__cold__))
 #define MONGO_COMPILER_NORETURN __attribute__((__noreturn__, __cold__))
@@ -52,8 +53,10 @@
 // GCC 7 added support for [[nodiscard]] with the semantics we want.
 #if defined(__has_cpp_attribute) && __has_cpp_attribute(nodiscard)
 #define MONGO_WARN_UNUSED_RESULT_CLASS [[nodiscard]]
+#define MONGO_WARN_UNUSED_RESULT_FUNCTION [[nodiscard]]
 #else
 #define MONGO_WARN_UNUSED_RESULT_CLASS
+#define MONGO_WARN_UNUSED_RESULT_FUNCTION [[gnu::warn_unused_result]]
 #endif
 
 #endif
diff --git a/src/mongo/platform/compiler_msvc.h b/src/mongo/platform/compiler_msvc.h
index e9e2bfa86ef..9c872256d4d 100644
--- a/src/mongo/platform/compiler_msvc.h
+++ b/src/mongo/platform/compiler_msvc.h
@@ -51,6 +51,7 @@
 #define MONGO_COMPILER_API_IMPORT __declspec(dllimport)
 
 #define MONGO_WARN_UNUSED_RESULT_CLASS
+#define MONGO_WARN_UNUSED_RESULT_FUNCTION
 
 #ifdef _M_IX86
 // 32-bit x86 supports multiple of calling conventions.  We build supporting the cdecl convention