Type Checking (CRT)
The compiler performs limited type checking on functions that can take a variable number of arguments, as follows:
| Function call | Type-checked arguments |
|---|---|
| _cprintf, _cscanf, printf, scanf | First argument (format string) |
| fprintf, fscanf, sprintf, sscanf | First two arguments (file or buffer and format string) |
| _snprintf | First three arguments (file or buffer, count, and format string) |
| _open | First two arguments (path and _open flag) |
| _sopen | First three arguments (path, _open flag, and sharing mode) |
| _execl, _execle, _execlp, _execlpe | First two arguments (path and first argument pointer) |
| _spawnl, _spawnle, _spawnlp, _spawnlpe | First three arguments (mode flag, path, and first argument pointer) |
The compiler performs the same limited type checking on the wide-character counterparts of these functions.
