Using C poll() on stdin with systemd
I recently wrote a C application which uses poll() towait for interrupts from a GPIO. It worked perfectly until we tried to run theapplication under systemd on Angstrom at which point it used 100%...
Why you might sometimes need to add -Wunreachable-code for C code
Often when you have unreachable code it means that you've not codedwhat you thought you had, e.g. curly braces are in the wrong place.By default, compilers such as gcc and clang (llvm) will compile...
Why you might need -Wsign-compare for C code
Here's a simple example of mixing signed and unsigned integers in C,does it do what you would expect?By default, compilers such as gcc and clang (llvm) will compile thefollowing code without...