CWARN.PACKED.TYPEDEF
Attribute 'packed' is ignored in typedef
The CWARN.PACKED.TYPEDEF checker finds instances in which the gcc 'packed' attribute is applied to a typedef declaration. The 'packed' attribute is allowed when a typedef includes a struct definition.
Vulnerable code example
Copy
typedef struct test{
int a;
char b;
int c;
} __attribute__((__packed__)) testing;
/* ... */
typedef struct s __attribute__((packed)) s_packed;
/* ... */
Klocwork flags line 7, in which the 'packed' attribute is used with a typedef declaration. The 'packed' attribute in line 5 isn't flagged, since it's part of the struct definition.