Snippets for sbcl 2.6.7 from Nix aarch64-linux

Sourced from https://hydra.nixos.org/log/86iqqxg5z52p3klr6xpdb8i8w0f5scqm-sbcl-2.6.7.drv.

• gc-common.c:3184:13: warning: ignoring return value of 'write' declared with attribute 'warn_unused_result' [-Wunused-result]
   3184 |             write(2, msg, n);
        |             ^~~~~~~~~~~~~~~~
  

• gc-common.c:3157:9: warning: ignoring return value of 'write' declared with attribute 'warn_unused_result' [-Wunused-result]
   3157 |         write(2, m, sizeof m-1); // (avoid possible stdio deadlock)
        |         ^~~~~~~~~~~~~~~~~~~~~~~
  

• runtime.c:438:41: warning: passing argument 1 of 'parse_size_arg' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
    438 |     dynamic_space_size = parse_size_arg(val, "SBCL_DYNAMIC_SPACE_SIZE");
        |                                         ^~~
  

• fcb-threads.c:144:5: warning: ignoring return value of 'write' declared with attribute 'warn_unused_result' [-Wunused-result]
    144 |     write(2, msg, sizeof msg-1);
        |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• ../../tests/heap-reloc/fake-mman.c:34:42: warning: ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]
     34 |     for (i = 0 ; i <= line_number ; ++i) fgets(line, sizeof line, f);
        |                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~