/* This test used to cause an assertion in the address space manager */ __attribute__((noinline)) static void inner(void) { /* Set registers to apriori known values. */ __asm__ __volatile__( "movq $0x101, %%rax\n" "movq $0x102, %%rbx\n" "movq $0x103, %%rcx\n" "movq $0x104, %%rdx\n" "movq $0x105, %%rsi\n" "movq $0x106, %%rdi\n" "movq $0x107, %%r8\n" "movq $0x108, %%r9\n" "movq $0x109, %%r10\n" "movq $0x10a, %%r11\n" "movq $0x10b, %%r12\n" "movq $0x10c, %%r13\n" "movq $0x10d, %%r14\n" "movq $0x10e, %%r15\n" // not %rbp as mdb is then not able to reconstruct stack trace // Do change %rsp (to test a bogus stack pointer), // but don't add %rsp to the clobber list since gcc ignores it // and since gcc >= 9.0 errors about it // see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52813 "movq $0x10f, %%rsp\n" "movq $0x1234, (%%rax)\n" // should cause SEGV here "ud2" // should never get here : // no output registers : // no input registers : "memory", "%rax", "%rbx", "%rcx", "%rdx", "%rsi", "%rdi", "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15"); } __attribute__((noinline)) static void outer(void) { inner(); } int main(int argc, const char *argv[]) { outer(); return 0; }