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-rw-r--r--libc/unistd/confstr.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/libc/unistd/confstr.c b/libc/unistd/confstr.c
index 957ee4d27..fc0bd599e 100644
--- a/libc/unistd/confstr.c
+++ b/libc/unistd/confstr.c
@@ -52,11 +52,13 @@ size_t confstr (int name, char *buf, size_t len)
string_len = sizeof("linuxthreads-x.xx");
# elif defined __UCLIBC_HAS_THREADS_NATIVE__
# define __NPTL_VERSION ("NPTL " \
- #__UCLIBC_MAJOR__ "." \
- #__UCLIBC_MINOR__ "." \
- #__UCLIBC_SUBLEVEL__)
+ __stringify(__UCLIBC_MAJOR__) "." \
+ __stringify(__UCLIBC_MINOR__) "." \
+ __stringify(__UCLIBC_SUBLEVEL__))
string = __NPTL_VERSION;
string_len = sizeof(__NPTL_VERSION);
+# else
+# error unable to determine thread impl
# endif
break;
#endif