gnutar 1.29 broken when LANG unset

[howarth.at.macports@…]

The gnutar 1.29 release causes 'gnutar -zxvf ', etc to fail when LANG is unset. This issue is discussed in the thread ​http://lists.gnu.org/archive/html/bug-tar/2016-09/msg00000.html

$ gnutar -zcvf test_data.tar.gz test_data test_data/ test_data/.noe.tbl.swp test_data/dihedral.tbl test_data/file.nam test_data/io.mc test_data/noe.tbl gnutar: test_data.tar.gz: Cannot write: Broken pipe gnutar: Child died with signal 11 gnutar: Error is not recoverable: exiting now

The failure backtraces as...

$ ulimit -c unlimited $ gnutar -zcvf test_data.tar.gz test_data test_data/ test_data/.noe.tbl.swp test_data/dihedral.tbl test_data/file.nam test_data/io.mc test_data/noe.tbl gnutar: test_data.tar.gz: Cannot write: Broken pipe gnutar: Child died with signal 11 gnutar: Error is not recoverable: exiting now $ lldb -c /cores/core.21601 which gnutar (lldb) target create "/opt/local/bin/gnutar" --core "/cores/core.21601" warning: (x86_64) /cores/core.21601 load command 84 LC_SEGMENT_64 has a fileoff + filesize (0x296fe000) that extends beyond the end of the file (0x296fd000), the segment will be truncated to match Core file '/cores/core.21601' (x86_64) was loaded. (lldb) bt

• thread #1: tid = 0x0000, 0x00007fff94ebb6d7

libdispatch.dylib`_dispatch_queue_push_queue + 463, stop reason = signal SIGSTOP

• frame #0: 0x00007fff94ebb6d7 libdispatch.dylib`_dispatch_queue_push_queue +

463

frame #1: 0x00007fff7478c4d0 libdispatch.dylib`_OS_dispatch_mach_vtable + 48 frame #2: 0x00007fff94eb9b06

libdispatch.dylib`_dispatch_queue_wakeup_with_qos_slow + 126

frame #3: 0x00007fff94ec013f libdispatch.dylib`_dispatch_mach_msg_send +

1952

frame #4: 0x00007fff94ebf8dc libdispatch.dylib`dispatch_mach_send + 262 frame #5: 0x00007fff89448fc9

libxpc.dylib`xpc_connection_send_message_with_reply + 131

frame #6: 0x00007fff8e31ebdf CoreFoundation`66-[CFPrefsSearchListSource

generationCountFromListOfSources:count:]_block_invoke_2 + 143

frame #7: 0x00007fff8e31ea0d CoreFoundation`_CFPrefsWithDaemonConnection +

381

frame #8: 0x00007fff8e31db96 CoreFoundation`66-[CFPrefsSearchListSource

generationCountFromListOfSources:count:]_block_invoke + 150

frame #9: 0x00007fff8e31d933 CoreFoundation`-[CFPrefsSearchListSource

generationCountFromListOfSources:count:] + 179

frame #10: 0x00007fff8e31d214 CoreFoundation`-[CFPrefsSearchListSource

alreadylocked_copyDictionary] + 324

frame #11: 0x00007fff8e31ce5c CoreFoundation`-[CFPrefsSearchListSource

alreadylocked_copyValueForKey:] + 60

frame #12: 0x00007fff8e31cdec

CoreFoundation`_CFPreferencesCopyAppValueWithContainer_block_invoke + 60

frame #13: 0x00007fff8e314b10 CoreFoundation`+[CFPrefsSearchListSource

withSearchListForIdentifier:container:perform:] + 608

frame #14: 0x00007fff8e314867

CoreFoundation`_CFPreferencesCopyAppValueWithContainer + 183

frame #15: 0x00000001021a6538

libintl.8.dylib`_nl_language_preferences_default + 70

frame #16: 0x00000001021a462f libintl.8.dylib`libintl_dcigettext + 667 frame #17: 0x00000001021491f2 gnutar`sys_child_open_for_compress + 125 frame #18: 0x000000010213011f gnutar`open_archive + 603 frame #19: 0x00000001021355ab gnutar`create_archive + 67 frame #20: 0x000000010214b494 gnutar`main + 3510 frame #21: 0x00007fff895605ad libdyld.dylib`start + 1 frame #22: 0x00007fff895605ad libdyld.dylib`start + 1

(lldb)

The offending commit in tar git causing this is...

commit 589ba77faf60e4632771d80e2b25d9e3778d4a3f Author: Sergey Poznyakoff <address@hidden> Date: Sat Dec 5 16:54:26 2015 +0200

Catch compressor execution errors.

• src/misc.c (write_fatal_details): Move to buffer.c
• src/buffer.c (write_fatal_details): Close the archive and wait for the compressor program to terminate in order to catch eventual execution errors.
• src/system.c (sys_child_open_for_compress): Ignore SIGPIPE so tar will not silently terminate when unable to write to the compressor.
• tests/comperr.at: New file.
• tests/Makefile.am: Add comperr.at
• tests/testsuite.at: Include comperr.at

In particular, the change....

diff --git a/src/system.c b/src/system.c index 9414233..dc0b2b0 100644 --- a/src/system.c +++ b/src/system.c @@ -330,6 +330,7 @@ sys_child_open_for_compress (void)

pid_t grandchild_pid; pid_t child_pid;

+ signal (SIGPIPE, SIG_IGN);

xpipe (parent_pipe); child_pid = xfork ();

doesn't seem to play well with the threading in the CoreFoundation framework (at least when LANG is unset).

A work-around would be to build gnutar 1.29 with --disable-nls to avoid the indirect linkage on the CoreFoundation framework through libintl or epoching back to gnutar 1.28.