[opensuse-factory] Dynamic Linker on openSUSE: questions about oS specific patches

Dear listmates, In maintaining the Haskell compiler for openSUSE I came across a discussion on dynamic linking for Haskell. In Haskell ticket 8935 https://ghc.haskell.org/trac/ghc/ticket/8935 a dynamic linker issue is raised that I cannot reproduce on openSUSE 13.1. Since I know the C compiler and linker gurus read this list, I am posting here. So my question is: Do we apply a patch to the system linker that makes to following program return the correct address (three times the same) for `environ` in all three calls of dlsym()? It is not an openSUSE problem, which is good, but an issue on quite a few other distros. The ticket mentions Ubuntu and CentOS. Any kind of help is highly appreciated! Peter -------8X-----------------8X------------------------- #include #include char *so = "/usr/lib/x86_64-linux-gnu/libgmp.so"; char *so2 = "/usr/lib/x86_64-linux-gnu/libpthread.so"; extern char**environ; int main(int argc, char *argv[]) { void *deflt, *hdl; deflt = dlopen(NULL, RTLD_LAZY | RTLD_GLOBAL); printf("environ = %p\n", &environ); printf("dlsym(deflt, \"environ\") = %p\n", dlsym(deflt,"environ")); hdl = dlopen(so, RTLD_LAZY); printf("dlsym(\"libgmp\", \"environ\") = %p\n", dlsym(hdl,"environ")); hdl = dlopen(so2, RTLD_LAZY); printf("dlsym(\"libpthread\", \"environ\") = %p\n", dlsym(hdl,"environ")); } -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org