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-rw-r--r--rts/include/Stg.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/rts/include/Stg.h b/rts/include/Stg.h
index 5b5ba3ddb7..bd15e73cda 100644
--- a/rts/include/Stg.h
+++ b/rts/include/Stg.h
@@ -294,6 +294,15 @@
# define STG_ALLOC_SIZE2(position1, position2)
#endif
+/*
+ * https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-returns_005fnonnull-function-attribute
+ */
+#if stg__has_attribute(__returns_nonnull__)
+# define STG_RETURNS_NONNULL __attribute__((__returns_nonnull__))
+#else
+# define STG_RETURNS_NONNULL
+#endif
+
/* -----------------------------------------------------------------------------
Global type definitions
-------------------------------------------------------------------------- */