[Bug nss/22184] Memory leak(s) in getaddrinfo_a

["tim.ruehsen at gmx dot de" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=22184

--- Comment #6 from Tim Rühsen <tim.ruehsen at gmx dot de> ---
(In reply to Carlos O'Donell from comment #4)
> You must use -rpath to build a binary that uses the new libraries, otherwise
> this uses your system libraries.
> 
> Please see this document for steps on how to do that:
> https://sourceware.org/glibc/wiki/Testing/Builds

Ok, looks now like
$ ldd gai_leak
        linux-vdso.so.1 (0x00007ffd743a2000)
        libanl.so.1 => /usr/tim/src/glibc/mybuild//resolv/libanl.so.1
(0x00007f93fddd3000)
        libpthread.so.0 => /usr/tim/src/glibc/mybuild//nptl/libpthread.so.0
(0x00007f93fdbb5000)
        libc.so.6 => /usr/tim/src/glibc/mybuild/libc.so.6 (0x00007f93fd812000)
        /usr/tim/src/glibc/mybuild//elf/ld.so => /lib64/ld-linux-x86-64.so.2
(0x00007f93fe1da000)

but can't get valgrind working (what tool do you use ?).

$ gcc -g 
-Wl,-rpath=${GLIBC}:${GLIBC}/math:${GLIBC}/elf:${GLIBC}/dlfcn:${GLIBC}/nss:${GLIBC}/nis:${GLIBC}/rt:${GLIBC}/resolv:${GLIBC}/crypt:${GLIBC}/nptl:${GLIBC}/dfp
  -Wl,--dynamic-linker=${GLIBC}/elf/ld.so gai_leak.c -o gai_leak -lanl
-lpthread
$ valgrind ./gai_leak
...
valgrind:  Fatal error at startup: a function redirection
valgrind:  which is mandatory for this platform-tool combination
valgrind:  cannot be set up.  Details of the redirection are:
valgrind:  
valgrind:  A must-be-redirected function
valgrind:  whose name matches the pattern:      strlen
valgrind:  in an object with soname matching:   ld-linux-x86-64.so.2
valgrind:  was not found whilst processing
valgrind:  symbols from the object with soname: ld-linux-x86-64.so.2
valgrind:  
valgrind:  Possible fixes: (1, short term): install glibc's debuginfo
valgrind:  package on this machine.  (2, longer term): ask the packagers
valgrind:  for your Linux distribution to please in future ship a non-
valgrind:  stripped ld.so (or whatever the dynamic linker .so is called)
valgrind:  that exports the above-named function using the standard
valgrind:  calling conventions for this platform.  The package you need
valgrind:  to install for fix (1) is called
valgrind:  
valgrind:    On Debian, Ubuntu:                 libc6-dbg
valgrind:    On SuSE, openSuSE, Fedora, RHEL:   glibc-debuginfo
valgrind:  
valgrind:  Note that if you are debugging a 32 bit process on a
valgrind:  64 bit system, you will need a corresponding 32 bit debuginfo
valgrind:  package (e.g. libc6-dbg:i386).
valgrind:  
valgrind:  Cannot continue -- exiting now.  Sorry.

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