Marcos_David.Dione@xxxxxxxxxxxxxxx writes: > more particularly I want to know whether the "single" threaded gcc > configuration implies that C code is also less thread-safe, e.g. > because C header files are also sensitive to it. It depends. On some systems, the -pthread option to gcc will #define the preprocessor symbol _REENTRANT. It may be the case that on some systems the header files will notice that and change behaviour. I don't think that is common. The -pthread option does not affect gcc's code generation. Ian
