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A use of the NULL macro.
Some standards forbid the use of NULL in C++ code, and recommend using the nullptr keyword instead.
| Class Name | Use of NULL | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Significance | style | ||||||||||||||||||||||||
| Mnemonic | BADMACRO.NULL | ||||||||||||||||||||||||
| Categories |
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| Availability | Available for C++ only (not C). |
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| Enabling | Checks for this warning class are
disabled by default. To enable them, add the following WARNING_FILTER
rule to the project configuration file.
WARNING_FILTER += allow class="Use of NULL" |
Japanese (ja)
#include <stdio.h>
extern void panic(void);
void panic_if_null(char *pA, char *pB) {
if (pA == NULL) /* 'Use of NULL' warning issued here */
panic();
if (pB == nullptr) /* ok: uses nullptr keyword */
panic();
}
This class is implemented using a BAD_MACRO_* rule set in the general template configuration file.
The following configuration file parameters affect checks for this warning class.