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-rw-r--r--gcc/fortran/trans-decl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/fortran/trans-decl.c b/gcc/fortran/trans-decl.c
index 9d71d71..04f037b 100644
--- a/gcc/fortran/trans-decl.c
+++ b/gcc/fortran/trans-decl.c
@@ -1203,7 +1203,7 @@ build_function_decl (gfc_symbol * sym)
/* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments
including a alternate return. In that case it can also be
marked as PURE. See also in gfc_get_extern_function_decl(). */
- if (attr.function)
+ if (attr.function && !gfc_return_by_reference (sym))
DECL_IS_PURE (fndecl) = 1;
TREE_SIDE_EFFECTS (fndecl) = 0;
}