Segmentation fault when optimized

[yhyadev]

I had some issues lately when I optimize the code with gcc -O2 or any level above 0, It gives me segfault at arena_da_append because of accessing the memory got from arena_alloc, the weird thing is that it first made it through 4 or more allocations

[yhyadev]

Check the code at ycc especially parser_parse_function_body (src/parser.c:421), I let the Makefile compile it with -O0 because it worked with gcc like that but with clang it always gives segfault