Problem with JUMP_TABLES_IN_TEXT_SECTION and linkonce section

["H. J. Lu" <hjl at lucon dot org>]

For those targets which define JUMP_TABLES_IN_TEXT_SECTION as 0 and
support linkonce section, we may generate

     .section        .gnu.linkonce.t.foo
   ...
.L1:
   ...
.L2:
   ...
.L3:
   ...
.L4:
   ...
        jmp     *.L5(,%esi,4)
        .section        .rodata
        .align 4
        .align 4
.L5:
        .long   .L1
        .long   .L2
        .long   .L3
        .long   .L4

Now if .gnu.linkonce.t.foo is discarded, we have undefined references
in .rodata. One way to solve it is to make JUMP_TABLES_IN_TEXT_SECTION
depend on section and set it to 1 for linkonce sections. But I think
the best way to solve it is to use comdat group.

BTW, there is a testcase in

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16276

for gcc 3.3. You need the binutils in CVS to see the error.


H.J.