Linker trouble on BlueGene/P system

Today I have learned that having a global variable in some C89 code which is not declared as static might be problematic if said code is later linked together with a Fortran program which includes a function with the exact same name es the mentioned variable. Somehow the program ended up at the location of [...]

SIGPROF signal handler and pthreads

During work on my thesis the question popped up how signals generated by the SIGPROF timer were handled in multithreaded code. Signal handlers are process specific to it could have been that one random thread handled the sent signal. As I could not a find a suitable explanation in the intertubes I performed a small [...]