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From: "buczek at molgen dot mpg.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug analyzer/113333] analyzer: False positives with calloc()
Date: Tue, 16 Jan 2024 08:05:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113333

--- Comment #4 from Donald Buczek <buczek at molgen dot mpg.de> ---
Great, thank you!

I wonder, if the related missed optimization opportunity should also be
reported.

#include <stdlib.h>
int f(void) {
    char **vec =3D calloc(1, sizeof(char *));
    if (vec) {
        // *vec =3D NULL;
        if (*vec)
            return 1;
    }
    return 0;
}

This resolves to nothing only if the commented-out line is added.

https://gcc.godbolt.org/z/WTar6zdne

Treat: clang gets it right.=