Created attachment 90057 [details]
qtmds.s

Primarily the assembly is broken. Kill .file 2 "axp.s" line (files are numbered
starting from 1, not 2).
Of course gas shouldn't segfault on it, just print error message.

Current CVS binutils certainly don't segfault on it:
./as-new qtmds.s
qtmds.s: Assembler messages:
qtmds.s:0: Warning: end of file not at end of a line; newline inserted
qtmds.s:1: Error: junk at end of line, first unrecognized character valued 0x7
qtmds.s:1: Error: junk at end of line, first unrecognized character valued 0xf
qtmds.s:1: Error: unknown opcode `'
qtmds.s:1: Error: unknown opcode `mbin'
qtmds.s:1: Error: unknown opcode `'

Argh, the file was some weirdo format.  When assembling just the assembler
from it, it works even without a warning.