gold cannot handle _start in a library

[Roland McGrath]

Given:

        $ gcc -c -xc <(echo '_start(){}') -o start.o
        $ ar cq libstart.a start.o
        $ ./gold/ld-new -o foo libstart.a

The output file foo is an empty ELF file.
With:

        $ ./gold/ld-new -o foo -e _start libstart.a
        ./gold/ld-new: warning: cannot find entry symbol '_start'

The results are the same, plus the extra warning.

BFD ld does not have this bug.
I tested with today's trunk builds of gold and BFD ld.


Thanks,
Roland