Hello
The executable I build from the sample, threaded-shared-conn.c crashes pretty
much every single time. It is linked to libcurl 7.64.0 static library. This is
on Linux (Ubuntu 16.04.5), gcc 5.4.0. Here is an example backtrace:
Core was generated by `./threaded-shared-conn'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x000000000040d3a1 in Curl_add_handle_to_pipeline ()
[Current thread is 1 (Thread 0x7effa96a1700 (LWP 27928))]
#0 0x000000000040d3a1 in Curl_add_handle_to_pipeline ()
#1 0x00000000004077a1 in multi_runsingle ()
#2 0x0000000000408ac1 in curl_multi_perform ()
#3 0x0000000000402f9b in curl_easy_perform ()
#4 0x0000000000402983 in run_thread ()
#5 0x00007effac4926ba in start_thread (arg=0x7effa96a1700) at
pthread_create.c:333
#6 0x00007effabfae41d in clone () at clone.S:109
I went back some versions and it didn't crash with curl-7.56.0. I see that
there were two crash reports in the area previously (issues 3391 and 2132), but
do not see an open bug in 7.64.0.
Here is how I build and run the test
version=7.64.0
wget https://curl.haxx.se/download/curl-${version}.tar.gz
tar xvzf curl-${version}.tar.gz
cd curl-${version}
./configure --prefix=${buildfolder} --disable-shared --without-ssl
make install
wget
https://raw.githubusercontent.com/curl/curl/master/docs/examples/threaded-shared-conn.c
gcc -DCURL_STATICLIB -I${buildfolder}/include/ -o threaded-shared-conn
threaded-shared-conn.c -L${buildfolder}/lib -lcurl -lpthread -lz
./threaded-shared-conn
Do let me know if I need to provide more details from the cores, or anything
else. I tried changing all sorts of things with no luck so far.
Thanks
Casper
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