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.