htl: Add __errno_location and __h_errno_location

As explained on
https://sourceware.org/ml/libc-alpha/2020-01/msg00049.html
the presence of __errno_location in libpthread.so on GNU/Linux makes
libpthread getting linked in for libstdc++. This aligns on that behavior, to
avoid issues that only GNU/Hurd would get.

1 files changed, 1 insertions, 0 deletions

diff --git a/htl/Versions b/htl/Versions
index c5a616da10..1c306acf5c 100644
--- a/htl/Versions
+++ b/htl/Versions
@@ -29,6 +29,7 @@ libc {
 libpthread {
   GLIBC_2.2.6 {
     _IO_flockfile; _IO_ftrylockfile; _IO_funlockfile;
+    __errno_location; __h_errno_location;
   }
   GLIBC_2.12 {
     __pthread_errorcheck_mutexattr; __pthread_recursive_mutexattr;