Re: Extra import symbol in debug build

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On 2023-02-16 15:29, Jonathan Wakely wrote:
On Thu, 16 Feb 2023 at 15:25, i.nixman--- via Gcc-help
<gcc-help@xxxxxxxxxxx> wrote:

hello,


I can successfully build the same C++ code using GCC-8.3.1 for Debug (-g
-O0) and Release (-g -O2) build.
I can successfully debug the Release-executable on a remote host, but I
can't debug the Debug-executable on a remote host, because the
Debug-executable imports an extra symbol
_ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv from libstdc++ which doesn't
exist.

It should exist, it has been there since GCC

hmm...

I just checked the two binaries using this cmd:

readelf -sW executable | grep _ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv

it shows nothing for release build, and shows this for debug build:

54: 0000000000000000 0 FUNC GLOBAL DEFAULT UND _ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv 199898: 0000000000000000 0 FUNC GLOBAL DEFAULT UND _ZNKSt9basic_iosIcSt11char_traitsIcEEcvbEv


what should I do next to understand the reason?
moreover, im unsure I understand the reason correctly...



best!




but I don't want to debug libstdc++, so I think I shouldn't install
additional debug version of libstdc++.

it looks like a bug, or am I wrong?

another my question is, what should I do to get rid of that extra symbol
in Debug build?




best!

ps
I can't update GCC nor libstdc++.



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