[llvm-bugs] [Bug 33664] New: comments in assembly files confuse line numbers in debugging with lldb

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=33664

            Bug ID: 33664
           Summary: comments in assembly files confuse line numbers in
                    debugging with lldb
           Product: new-bugs
           Version: 4.0
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: mike.benfield at gmail.com
                CC: llvm-bugs at lists.llvm.org

I don't know whether this is a problem with lldb or with the debugging
information clang produces. In the following example, I try to set a breakpoint
at line 11 but lldb points to line 16.

$ cat trash.s
.intel_syntax noprefix

.text
        .global _main
_main:
        # text
        # text
        # text
        # text
        # text
        mov     rbx, 20
        # text
        # text
        # text
        # text
        # text
        mov     rax, 5
        ret
$ clang -c -g trash.s
$ clang trash.o
$ lldb a.out
(lldb) target create "a.out"
Current executable set to 'a.out' (x86_64).
(lldb) breakpoint set -f trash.s -l 11
Breakpoint 1: where = a.out`main, address = 0x0000000100000fa9
(lldb) run
Process 24212 launched:
'/Users/mike/Dropbox/Repositories/assembly_experiments/isort/a.out' (x86_64)
Process 24212 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
    frame #0: 0x0000000100000fa9 a.out`main at trash.s:16
   13           # text
   14           # text
   15           # text
-> 16           # text
   17           mov     rax, 5
   18           ret

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20170630/392e4dbe/attachment.html>