make debug TEST_ARGS="-l /Socket/sendv --no-fork"

Assertion failed: (r == gFourMB), function sendv_test_client, file tests/test-mongoc-socket.c, line 318.
[New Thread 80200f800 (LWP 100862/test-libmongoc)]

Program received signal SIGABRT, Aborted.
[Switching to Thread 80200f800 (LWP 100862/test-libmongoc)]
0x00000008016dd35a in thr_kill () from /lib/libc.so.7
(gdb) bt
#0  0x00000008016dd35a in thr_kill () from /lib/libc.so.7
#1  0x00000008016dd346 in raise () from /lib/libc.so.7
#2  0x00000008016dd2c9 in abort () from /lib/libc.so.7
#3  0x0000000801743f91 in __assert () from /lib/libc.so.7
#4  0x0000000000467e04 in sendv_test_client (data_=0x7fffffffe038) at tests/test-mongoc-socket.c:318
#5  0x0000000801401855 in pthread_create () from /lib/libthr.so.3
#6  0x0000000000000000 in ?? ()
(gdb) f 4
#4  0x0000000000467e04 in sendv_test_client (data_=0x7fffffffe038) at tests/test-mongoc-socket.c:318
318                assert (r == gFourMB);
Current language:  auto; currently minimal
(gdb) p r
$1 = 130708
(gdb) p gFourMB
$2 = 4194304