fopen leak detected, fdopen leak not detected (cppcheck 2.5.1)

[Jarkko Hietaniemi]

$ cat leak-fp.c
#include <stdio.h>

void leak_fp_fopen(char *fn) {
    fopen(fn, "r");
}

void leak_fp_fdopen(FILE *fp) {
    fdopen(fileno(fp), "r");
}
$ cppcheck leak-fp.c
/Users/jhi/leak-fp.c:4:5: error: Return value of allocation function 'fopen' is not stored. [leakReturnValNotUsed]
    fopen(fn, "r");
    ^
$ cppcheck --version
Cppcheck 2.5

[orbitcowboy]

Did you use " --library=posix", at commandline? It should provide information of fdopen to Cppcheck.

[Jarkko Hietaniemi]

orbitcowboy wrote:

Did you use " --library=posix", at commandline? It should provide
information of fdopen to Cppcheck.

Ah, no I did not. I wasn't aware of this option. With that, cppcheck
does correctly flag that use of fdopen. Thanks!

Now I need to figure out how to pass that flag to cppcheck when I am
using the Emacs flycheck-mode (that's how I usually interface with
cppcheck).

---

fopen leak detected, fdopen leak not detected (cppcheck 2.5.1)
https://sourceforge.net/p/cppcheck/discussion/development/thread/e459fa478c/?limit=25#fe1f

---

Sent from sourceforge.net because you indicated interest in
https://sourceforge.net/p/cppcheck/discussion/development/

To unsubscribe from further messages, please visit
https://sourceforge.net/auth/subscriptions/