[Bug lto/48467] New: [LTO/driver] Anomalous behavior of -save-temps

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48467

           Summary: [LTO/driver] Anomalous behavior of -save-temps
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: lto
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: d.g.gorbachev@gmail.com


Created attachment 23884
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23884
DIFF file with 4 tests

1. After running the 1st test, notice the absence of one generated assembler
file (1.s), which is deleted by lto1. In toplev.c,

1851  if (flag_wpa)
1852    unlink_if_ordinary (asm_file_name);

2. As the 2nd and 3rd tests show, it can also be misused as an output file for
lto1, so its original, written by cc1, content gets lost.

3. The 4th test gives good, expected results.