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-rw-r--r--configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 70deefb..5a3e340 100644
--- a/configure.ac
+++ b/configure.ac
@@ -510,7 +510,7 @@ case $ac_sys_system/$ac_sys_release in
# has no effect, don't bother defining them
Darwin/@<:@6789@:>@.*)
define_xopen_source=no;;
- Darwin/1@<:@0-9@:>@.*)
+ Darwin/@<:@[12]@:>@@<:@0-9@:>@.*)
define_xopen_source=no;;
# On AIX 4 and 5.1, mbstate_t is defined only when _XOPEN_SOURCE == 500 but
# used in wcsnrtombs() and mbsnrtowcs() even if _XOPEN_SOURCE is not defined