kc3-lang/gnulib

2013-09-06T20:00:38

fflush, freadahead, fseeko: Fix for Android * lib/stdio-impl.h: Use local __sfileext definition. Suggested by Bruno Haible in: <http://lists.gnu.org/archive/html/bug-gnulib/2012-01/msg00306.html> fflush, freadahead, and fseeko have trouble compiling on Android[1] because they need access to internal elements of the FILE struct. Bionic libc[2], like OpenBSD libc[3], puts the ungetc buffer "_ub" at the beginning of the __sfileext struct. Therefore we can reuse the existing OpenBSD implementation for Android. Test results (Android 4.2.2, ARMv7, NDK r9): root@android:/data/local/tmp # export srcdir=`pwd` root@android:/data/local/tmp # ./test-fflush2.sh ; echo $? 0 root@android:/data/local/tmp # ./test-freadahead.sh ; echo $? 0 root@android:/data/local/tmp # ./test-fseeko.sh ; echo $? 0 root@android:/data/local/tmp # ./test-fseeko2.sh ; echo $? Skipping test: ungetc cannot handle arbitrary bytes 77 root@android:/data/local/tmp # ./test-fseeko3.sh ; echo $? 0 root@android:/data/local/tmp # ./test-fseeko4.sh ; echo $? 0 [1] http://lists.gnu.org/archive/html/bug-gnulib/2012-01/msg00295.html [2] https://android.googlesource.com/platform/bionic/+/android-4.3_r2.2/libc/stdio/fileext.h [3] http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdio/fileext.h?rev=1.2;content-type=text%2Fplain