blob: 362aef2098d49a7b7a12a6f4b128e4220e1660fc [file] [log] [blame]
.. title:: clang-tidy - cert-err34-c
This check flags calls to string-to-number conversion functions that do not
verify the validity of the conversion, such as ``atoi()`` or ``scanf()``. It
does not flag calls to ``strtol()``, or other, related conversion functions that
do perform better error checking.
.. code-block:: c
#include <stdlib.h>
void func(const char *buff) {
int si;
if (buff) {
si = atoi(buff); /* 'atoi' used to convert a string to an integer, but function will
not report conversion errors; consider using 'strtol' instead. */
} else {
/* Handle error */
This check corresponds to the CERT C Coding Standard rule
`ERR34-C. Detect errors when converting a string to a number