b-b-bbut that's a GNU extension, it's cheating ðŸ˜
That won't work with -pedantic-errors. https://godbolt.org/z/1qP5aMeGT
<source>: In function 'fx':
<source>:7:26: error: ISO C forbids omitting the middle term of a '?:' expression [-Wpedantic]
7 | p = realloc(p, len) ?: p;
| ^
Compiler returned: 1
