[Bug driver/57784] New: GCC inadvertedly truncates source text

["mtodorov3_69 at yahoo dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57784

            Bug ID: 57784
           Summary: GCC inadvertedly truncates source text
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: driver
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mtodorov3_69 at yahoo dot com

The example goes as follows:

The line:

# gcc -o mypatch mypatch.cc -lstdc++

is mistyped as:

# gcc -o mypatch.cc -lstdc++

GCC complains about no main() and truncates the C++ source to zero length!

Correct would be to complain about wrong number of arguments before doing any
action on mypatch.cc.
Would it hurt to check suffix of the file referenced by "-o" option, if it is
common that object file is overwritten? Few executables' names end with ".cc"
or ".c".

Fortunatelly, the source was recovered with minimal loss of changes from backup
location :-)

Greetz,
mt