[Bug gas/3433] New: Incorrect line numbers with certain branches

[andrew dot stubbs at st dot com]

Given the following example:

--------------------------------
        .file 1 "test.c"
        .text
        .loc 1 2
        nop
        .loc 1 1000
        bt 0f
        nop

        .align 9, 0
0:
--------------------------------

The SH assembler produces an object file with the wrong line numbers in the
debug info.

In this case the offset is too large for the 'bt' instruction so it is converted
to two branches. In examples where this is not the case the line numbering is 
fine.

$ ./gas/as-new -o test2.o test2.s
test2.s: Assembler messages:
test2.s:6: Warning: overflow in branch to L1; converted into longer instruction
sequence
$ ./binutils/objdump -dl test2.o

test2.o:     file format elf32-sh

Disassembly of section .text:

00000000 <.text>:
blah/test.c:2
   0:   00 09           nop
   2:   8b 01           bf      0x8
   4:   a0 fc           bra     0x200
blah/test.c:1000
   6:   00 09           nop
   8:   00 09           nop
        ...

Note that line 1000 is supposed to start two instructions earlier; before the 
'bf'.

-- 
           Summary: Incorrect line numbers with certain branches
           Product: binutils
           Version: 2.18 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gas
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: andrew dot stubbs at st dot com
                CC: bug-binutils at gnu dot org
GCC target triplet: sh-*-*


http://sourceware.org/bugzilla/show_bug.cgi?id=3433

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