ptsname_r: Work around bug on Android 4.3. * m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is correct. * lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R is defined, just fix the return value. * doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword: The behaviour of musl libc is nothing to be "fixed", since it is compliant with the next POSIX standard.

--- test-driver.bak	2019-01-23 03:22:06.672283432 +0100
+++ test-driver	2019-01-23 04:23:21.201060757 +0100
@@ -104,7 +104,10 @@
 trap "st=143; $do_exit" 15

 # Test script is run here.
-"$@" >$log_file 2>&1
+case "$1" in
+  *.sh) sh "$@" >$log_file 2>&1 ;;
+  *)    "$@" >$log_file 2>&1 ;;
+esac
 estatus=$?

 if test $enable_hard_errors = no && test $estatus -eq 99; then