gcc/testsuite/gcc.dg/ubsan/pr70878.c - gcc - Git at Google

 /* PR sanitizer/80878 */
 /* { dg-do compile { target { { i?86-*-* x86_64-*-* } && lp64 } } } */
 /* { dg-options "-fsanitize=object-size" } */

 void * sbrk ()
 {
  volatile register unsigned int sp_r1 __asm__ ("ebx");
  return __builtin_strcat ((char*)sp_r1, 0); /* { dg-warning "cast to pointer from integer of different size" } */
 }
	/* PR sanitizer/80878 */
	/* { dg-do compile { target { { i?86-- x86_64-- } && lp64 } } } */
	/* { dg-options "-fsanitize=object-size" } */

	void * sbrk ()
	{
	volatile register unsigned int sp_r1 __asm__ ("ebx");
	return __builtin_strcat ((char)sp_r1, 0); / { dg-warning "cast to pointer from integer of different size" } */
	}