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-rw-r--r--m4/strerror_r.m41
1 files changed, 1 insertions, 0 deletions
diff --git a/m4/strerror_r.m4 b/m4/strerror_r.m4
index 6f8bd25f7..6add64449 100644
--- a/m4/strerror_r.m4
+++ b/m4/strerror_r.m4
@@ -5,6 +5,7 @@ dnl Determine whether the strerror_r implementation is one of
dnl the broken ones that returns `int' rather than `char*'.
dnl Actually, this tests only whether it returns a scalar
dnl or an array, but that should be enough.
+dnl On at least DEC UNIX 4.0[A-D], strerror_r returns `int'.
dnl This is used by lib/error.c.
AC_DEFUN(jm_FUNC_STRERROR_R,