https requests leaking memory about curl

[dfandrich]

On Fri, Feb 27, 2015 at 04:40:59PM -0800, Stephen Mathieson wrote:

it looks like even the simplest https requests are leaking memory.

valgrind reports the following example leaves "43,397 bytes in 947 blocks"
available:

The code doesn't call curl_global_cleanup() which could make a big
difference. The autobuilds show many environments are not leaking memory, so
it's likely something in your environment. If you can still reproduce it,
please include more information on the platform and libraries you're using
including version numbers.

Dan

[stephenmathieson]

added curl_global_cleanup() which had no effect: https://gist.github.com/stephenmathieson/12647b3caad72be5c911

here's some info on my env:

$ uname --all 
Linux precise64 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.6/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.3-1ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) 
$ curl-config --cc
gcc
$ curl-config --libs
-L/usr/lib/x86_64-linux-gnu -lcurl -Wl,-Bsymbolic-functions -Wl,-z,relro
$ curl-config --version
libcurl 7.22.0

let me know if anything else may help

[bagder]

Can you please try a recent version and see if it remains? Are you using a recent gnutls version?

[bagder]

No feedback, closing. If this can be repeated on a recent version then we re-open!

[aless673]

Hi, valgrind gives me an error with package libcurl4-gnutls-dev

http://pastie.org/10700986

No error with libcurl4-openssl-dev (same code) :

http://pastie.org/10700987

Curl request is done as this example : http://curl.haxx.se/libcurl/c/getinmemory.html

I investigated and found that the leak occured when https url is used. Only with gnutls.