5.5.19 doesn't build with clang

[nekopsykose]

./utils.h:62:7: error: 'malloc' attribute takes no arguments
void *MALLOC_FREE NONNULL do_nofail(void *ptr, const char *file, const int line)
      ^
./utils.h:20:37: note: expanded from macro 'MALLOC_FREE'
# define MALLOC_FREE __attribute__((malloc(free)))
                                    ^
1 error generated.

this is because clang doesn't implement the malloc (deallocator) attribute (ref https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html), just malloc. this was added in f01f8d4 . ref for llvm: llvm/llvm-project#51607 llvm/llvm-project#53152

[rfc1036]

Please send a patch.

[marsam]

I've submitted a patch #156

[rfc1036]

I have implemented a slightly different solution.