The -t (opts.text_all) will make sure the complete text of every segment is written out. This results in occasional segments not being completely written out for instance:
LOAD 0x00000000001e1000 0x00007f17296ba000 0x0000000000000000
0x0000000000000000 0x00000000001ff000 1000
LOAD 0x00000000001e1000 0x00007f17298b9000 0x0000000000000000
0x0000000000004000 0x0000000000004000 R 1000
Notice the file size (The 2nd line after the first LOAD line) is 0x000000000000000
And therefore the offset of the following segment starts at the same offset as the previous. This is a bug that will result in missing code.