GCC Inline Assembly: Jump to label outside block

Question

When using inline assembly under MSVC, one is allowed to jump outside of the assembly block by referencing a label in the C/C++ code, as explained in this MSDN article.

Can such thing be done when using inline assembly under GCC?

Here's an example of what I'm trying to accomplish:

__asm__ __volatile__ (
"   /* assembly code */ "
"   jz external_label; "
);

/* some C code */

external_label:
/* C code coninues... */

The compiler, however, complains about "external_label" not being defined.

Answer 1

What if you define the label with the assembler?

asm("external_label:");

---

Update: this code seems to work:

#include <stdio.h>

int
main(void)
{
  asm("jmp label");
  puts("You should not see this.");
  asm("label:");

  return 0;
}