• d-bugmail puremagic.com (35/35) Feb 06 2012 http://d.puremagic.com/issues/show_bug.cgi?id=7454
• d-bugmail puremagic.com (56/56) Aug 24 2012 http://d.puremagic.com/issues/show_bug.cgi?id=7454

d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=7454

           Summary: Add file and line numbers to Linux stack traces using
                    addr2line
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: druntime
        AssignedTo: nobody puremagic.com
        ReportedBy: jmdavisProg gmx.com


--- Comment #0 from Jonathan M Davis <jmdavisProg gmx.com> 2012-02-06 15:10:58
PST ---
I'm not quite sure what the situation on Windows or other Posix OSes is, but on
Linux, D's stack traces lack files and line numbers. We sort of get the file
name thanks to the fact that the module name _is_ the file name (or at least
close to it) and that ends up as part of the symbol, but the actual file name
would still be nice, and we lack the line number regardless.

Per this answer on stackoveflow (method #4):

http://stackoverflow.com/questions/3151779/how-its-better-to-invoke-gdb-from-program-to-print-its-stacktrace/4611112#4611112

it should be possible to get the file and line number for at least some portion
of a stack trace (some lines seem to end up with ??:0 rather than any real
information, but that's still better than nothing).

I did some experimenting on my own, and it appears that the address printed in
the stack trace does indeed work with addr2line with some lines as long as I
compile with -g. So, I don't think that we can always have stack traces with
file names and line numbers, but we _can_ as long as debug symbols are enabled.

As such, I think that we should add file names and line numbers to D's stack
traces on Linux. If we can do it for other OSes, we should do it there as well,
but I'm opening up this enhancement specifically for Linux because that's the
only one for which I have any clue how to do it.

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d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=7454


Artem Borisovskiy <kolos80 bk.ru> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kolos80 bk.ru


--- Comment #1 from Artem Borisovskiy <kolos80 bk.ru> 2012-08-24 18:59:56 PDT
---
Jonathan, I wrote a script that does the job, you can use it until the bug gets
fixed. Just feed it with stack trace and you'll get not only file names and
line numbers (in red color), but also the corresponding lines.

---------
#!/bin/sh

if [[ "$1" == "" || "$2" != "" ]]; then
    echo "usage: $0 <executable>"
    exit
fi

grep -Po "0x[\d\w]+" | addr2line -e "$1" | grep -v "^??" | sed -r
's/(.*):([0-9]*)/printf "\\033[0;31m\0:\\033[0m\n    " \&\& sed -n \2p \1 | sed
"s\/^ *\/\/"/' | sh
---------

Note: lines from stack trace without corresponding debug info are thrown away.
In my case for stack trace

./micron() [0x4b4216]  
./micron() [0x427941]
./micron() [0x417ffc]
./micron() [0x417f45]
./micron() [0x41899e]
./micron() [0x483931]
./micron() [0x48c282]
./micron() [0x4838b6]
./micron() [0x419320]
./micron() [0x4278e5]
./micron() [0x4d2760]
./micron() [0x4d2335]
./micron() [0x4b8d37]
./micron() [0x4b4b21]
./micron() [0x4b4472]
./micron() [0x4b43fd]

it gives the following output:

/home/burjui/devel/micron-d/code.d:38:
    assert(cell);
/home/burjui/devel/micron-d/code.d:27:
    this(in this)
/home/burjui/devel/micron-d/code.d:169:
    e._value = new Value(*_value);
/home/burjui/devel/micron-d/types.d:349:
    this.return_type = return_type.unlessNull(return_type.clone);
/home/burjui/devel/micron-d/utils.d:118:
    return obj is null ? cast(U)null : ret();
/home/burjui/devel/micron-d/types.d:349:
    this.return_type = return_type.unlessNull(return_type.clone);
/home/burjui/devel/micron-d/code.d:485:
    auto print_type = new FnType((new Void).toExpr, [ FnArg((new
Number(1)).toExpr, "x") ], [], true);

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