[Bug analyzer/109131] -Wanalyzer-deref-before-check false positive seen in git's builtin/show-ref.c

[alexey.lapshin at espressif dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109131

Alexey <alexey.lapshin at espressif dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexey.lapshin at espressif 
dot co
                   |                            |m

--- Comment #1 from Alexey <alexey.lapshin at espressif dot com> ---
There is a smaller reproducer:

```
struct a {
    int b;
};
void foo(struct a *p) {
    if (p->b)
        p = 0;
    if (p && p->b)   // "p" can be 0 but warning
        ;
}
```