[Bug modula2/110126] Variables are reported as unused when only referenced by ASM statements

["admin@tho-otto.de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110126

--- Comment #2 from Thorsten Otto <admin@tho-otto.de> ---
But even if i rewrite it like that, i still get the warning.

I avoided doing anything machine specific in the first example, but if i
actually do, and use something like:

PROCEDURE test;
BEGIN
  ASM("movl %1,%%eax; addl $1,%%eax; movl %%eax,%0" : "=r"(x) : "0"(x) :
"eax");
END test;

i still get the warning.

BTW, is there a reason why the string in the asm statement can't be
concatenated?

eg. especially if the statement becomes longer, you would usually want to write
it something like

  ASM("movl %1,%%eax;" +
      "addl $1,%%eax;" +
      "movl %%eax,%0"
     : "=r"(x) : "0"(x) : "eax");