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memprintf() performs realloc and updates then the pointer to an output buffer, where it has written the data. So free() is called on the previous buffer address, if it was provided. pat_ref_set_elt() uses memprintf() to write its error message as well as pat_ref_set(). So, when we re-enter into the while loop the second time and pat_ref_set_elt() has returned, the *err ptr (previous value of *merr) is already freed by memprintf() from pat_ref_set_el(). 'if (!found)' condition is false at this point, because we've found a node at the first loop. So, the second memprintf(), in order to write error messages, does again free(*err). This should be backported in all stable versions. (cherry picked from commit 4f2493f3551f8c344485cccf075c3b15f9825181) Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
The HAProxy documentation has been split into a number of different files for ease of use. Please refer to the following files depending on what you're looking for : - INSTALL for instructions on how to build and install HAProxy - BRANCHES to understand the project's life cycle and what version to use - LICENSE for the project's license - CONTRIBUTING for the process to follow to submit contributions The more detailed documentation is located into the doc/ directory : - doc/intro.txt for a quick introduction on HAProxy - doc/configuration.txt for the configuration's reference manual - doc/lua.txt for the Lua's reference manual - doc/SPOE.txt for how to use the SPOE engine - doc/network-namespaces.txt for how to use network namespaces under Linux - doc/management.txt for the management guide - doc/regression-testing.txt for how to use the regression testing suite - doc/peers.txt for the peers protocol reference - doc/coding-style.txt for how to adopt HAProxy's coding style - doc/internals for developer-specific documentation (not all up to date)