-Og in dbgutil builds

Miklos Vajna vmiklos at collabora.co.uk
Thu Apr 6 08:42:21 UTC 2017


On Thu, Apr 06, 2017 at 09:09:54AM +0100, Caolán McNamara <caolanm at redhat.com> wrote:
> editeng/source/editeng/impedit2.cxx:1820
> (gdb) print rType
> $1 = <optimized out>
> (gdb) print rTypes
> $2 = <optimized
> out>
> (gdb) print pParaPortion->aScriptInfos
> value has been optimized out
> (
> gdb) print pParaPortion
> $3 = <optimized out>
> this Og thing can be quite the pain

Yesterday I brought up an other problem on IRC which is also specific to

14:15 <@vmiklos> mst_: today's HAVE_GCC_OG annoyance: in vcl/source/gdi/pdfwriter_impl.cxx:10871, i put an if (nObject == 15)\nSAL_DEBUG("foo"); and it never appears. tweak config_host.mk 
                 to change _OG=TRUE to _OG=, rebuild the source file -> it works. it would be really nice to have that -Og thing as an opt-in feature, not on by default
14:16 < tml__> vmiklos: is there any good reason for the compiler to assume that nObject can never be 15?
14:16 <@sberg> vmiklos, that looks more like a bug somewhere than like genuine -Og fallout?
14:17 <@vmiklos> the above code location is a SAL_INFO() line, if i set SAL_LOG accordingly, then i see that nObject *is* 15 once
14:18 < tml__> weird

Michael S: could you please consider making -Og an opt-in feature, not a
default one?


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