On Saturday 04 May 2024 23:46:03 LIU Hao wrote: > 在 2024-05-04 20:18, Pali Rohár 写道: > > msvcrt's execve splits every member of arglist to more arguments by > > space. If you want to prevent this splitting then you need to quote > > argument as: > > Each Windows process receives its command-line arguments as a whole string > and has to parse it with `__getmainargs()`, unlike on Linux etc. where > arguments are passed directly as a `char**`.
I know. The point is that msvcrt's _execve() is not compatible with msvcrt's __getmainargs(). There is a convention which applications follow to convert argv[] array into single string command-line and vice-versa. It matches getmainargs. But _exec* and _spawn* do not follow it, which makes these two functions hard to use... > > > So in my opinion, for compatibility with POSIX (when one of those macro > > is defined, like _POSIX_C_SOURCE) then mingw-w64 should provide also > > POSIX compatible execve() function wrapper. > > I think that nobody would ever prefer `_execve()` because it's a Unix relic. > It would not be very useful without `fork()`. execve() may be useful also without fork() - for wrapper purposes. When executable A wants to just to redirect control to executable B. But I agree that most common usage is fork()+exec*() > And we probably should not be reproducing Unix too much. Makes sense. Better is to let this execve() issue as is. On a side note, I think that implementing posix_spawn() can be useful. It can be implemented as a simple wrapper around msvcrt spawn() with argv[] handling compatible with msvcrt __getmainargs(). _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
