Warning from GDB 8.3 used at the command line

[John Dallman]

Preface: I am not producing an Android app. I work for a software component business, creating shared libraries, compiled from C and C++ code, for use in third-party customers' apps. I test my libraries in a command-line test harness, which I run in the ADB shell. I am only producing software for 64-bit ARM, because none of the customers want 32-bit code. 

The GDB 8.3 from NDK21b produces this warning when I type "cont" to it, to start running my test harness under GDB. 

warning: .dynamic section for "target:/data/local/tmp/local_parasolid/users/kerman/kid.out" is not at the expected address (wrong library or version mismatch?)

The debugger works OK. Is this a warning I should worry about? 

The full GDB output is:

GNU gdb (GDB) 8.3
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word".
Remote debugging using localhost:12013
Reading /data/local/tmp/local_parasolid/users/kerman/kid.out from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.
Reading /data/local/tmp/local_parasolid/users/kerman/kid.out from remote target...
Reading symbols from target:/data/local/tmp/local_parasolid/users/kerman/kid.out...
Reading /system/bin/linker64 from remote target...
Reading /system/bin/linker64 from remote target...
Reading symbols from target:/system/bin/linker64...
(No debugging symbols found in target:/system/bin/linker64)
0x0000007fbf5c7058 in __dl__start () from target:/system/bin/linker64
(gdb) cont
Continuing.
Reading /data/local/tmp/local_parasolid/users/kerman/kid.out from remote target...
warning: .dynamic section for "target:/data/local/tmp/local_parasolid/users/kerman/kid.out" is not at the expected address (wrong library or version mismatch?)
Reading /system/lib64/libm.so from remote target...
Reading /system/lib64/libdl.so from remote target...
Reading /system/lib64/libc.so from remote target...
Reading /system/lib64/libnetd_client.so from remote target...
Reading /system/lib64/libc++.so from remote target...
[Inferior 1 (process 14011) exited normally]

Thanks,

John Dallman

[Dan Albert]

+hhb

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[Haibo Huang]

This usually happens when the library version doesn't match. But in your case the binary is pulled directly from the device so I'm not sure...

Is the binary built with debug symbols?

[John Dallman]

My build system is quite unconventional: it uses the clang command line directly, and does not go near CMake, Gradle, or any of the other build systems supplied with the NDK (or SDK).  

I have not built all of the binary with debug symbols. It's large, and that would take tens of minutes. So I recompile the source files I'm interested in for the current problem with debug information, and build a binary with those object files taking precedence over the versions of them without debug symbols in an archive library (a .a file, not an Android Archive). 

Thanks,

John

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