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-rw-r--r--src/sort.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/sort.c b/src/sort.c
index 084addf49..3d3119d90 100644
--- a/src/sort.c
+++ b/src/sort.c
@@ -1846,7 +1846,7 @@ static char const unit_order[UCHAR_LIM] =
separators and a decimal point, but it may not contain leading blanks.
Negative numbers get negative orders; zero numbers have a zero order. */
-static int
+static int _GL_ATTRIBUTE_PURE
find_unit_order (char const *number)
{
bool minus_sign = (*number == '-');