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-rw-r--r--gcc/fixinc/check.tpl2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/fixinc/check.tpl b/gcc/fixinc/check.tpl
index 1f796fe8fd1..fd9e965ac0b 100644
--- a/gcc/fixinc/check.tpl
+++ b/gcc/fixinc/check.tpl
@@ -135,7 +135,7 @@ do
:
else
- diff -u $f ${TESTBASE}/$f >&2 || :
+ ${DIFF:-diff} -u $f ${TESTBASE}/$f >&2 || :
exitok=false
fi
done