Automatically allocated function local variable address overwrites function parameter ------------------------------------------------------------------------------------- Key: MODCLUSTER-625 URL: https://issues.jboss.org/browse/MODCLUSTER-625 Project: mod_cluster Issue Type: Bug Components: Native (httpd modules) Affects Versions: 1.3.7.Final, 2.0.0.Alpha1 Environment: C99 (apparently both GNU and MSVC) Reporter: Michal Karm Babacek Assignee: George Zaronikas Fix For: 2.0.0.Alpha1 I went through the cppcheck static analysis report on the current mod_proxy_cluster code base, see [cppcheck.log|https://ci.modcluster.io/job/mod_proxy_cluster-2.x-windows/DISTRO=apache-lounge,label=w2k12r2/93/artifact/cppcheck.log/*view*/], and among *many* warnings and style check failures, there was a one outstanding error reported, which set me wondering. The error occurs on two places and I'm scratching my head as to whether is is a false positive or not, WDYT? * [native/mod_manager/domain.c:198|https://github.com/modcluster/mod_proxy_c...]: (error) Address of local auto-variable assigned to a function parameter. * [native/mod_manager/node.c:227|https://github.com/modcluster/mod_proxy_clu...]: (error) Address of local auto-variable assigned to a function parameter. Is it O.K. to handle local, function scope, automatically allocated variable this way? To use it's address later in ap_slotmem_do? Couldn't it trigger undefined behaviour and cause some of our rare, hard to reproduce crashes? Feel free to pick up any other pertinent messages from the log.