internalAstError with function pointer in if

[chrchr]

libvips-8.18.4/libvips/iofuncs/threadpool.c:

void f(int (*fp)()) {
    if (fp && fp()) {}
}

test.cpp:2:12: error: Syntax Error: AST broken, binary operator is missing operand(s). [internalAstError]
    if (fp && fp()) {}
           ^

Requires --language=c.

[chrchr]

Started with ​https://github.com/cppcheck-opensource/cppcheck/commit/5aa31d0da84926c8abf213942498c53cba2445c1

[chrchr]

Variation:

//void *p, *q;
void f(int (*cmp)(void*, void*)) {
    if (cmp) {
	    if (p && q && cmp(p, q) >= 0) {}
	}
}