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-rw-r--r--gcc/fold-const.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 6016a70..fedc3ca 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -894,6 +894,7 @@ negate_mathfn_p (enum built_in_function code)
CASE_FLT_FN (BUILT_IN_SINH):
CASE_FLT_FN (BUILT_IN_TAN):
CASE_FLT_FN (BUILT_IN_TANH):
+ CASE_FLT_FN (BUILT_IN_ERF):
return true;
default: