[asan] Make dump_registers.cc more stable
#include <assert.h>
#include <stdio.h>
+#include <sys/mman.h>
int main() {
fprintf(stderr, "Hello\n");
char *ptr;
- if (sizeof(void *) == 8)
- ptr = (char *)0x6666666666666666;
- else if (sizeof(void *) == 4)
- ptr = (char *)0x55555555;
- else
- assert(0 && "Your computer is weird.");
+ ptr = (char *)mmap(NULL, 0x10000, PROT_NONE, MAP_ANON | MAP_PRIVATE, -1, 0);
+ assert(ptr && "failed to mmap");
+
+ fprintf(stderr, sizeof(uintptr_t) == 8 ? "p = 0x%016lx\n" : "p = 0x%08lx\n", (uintptr_t)ptr);
+ // CHECK: p = [[ADDR:0x[0-9]+]]
char c = *ptr; // BOOM
// CHECK: ERROR: AddressSanitizer: {{SEGV|BUS}}
// CHECK: Register values:
- // CHECK: {{0x55555555|0x6666666666666666}}
+ // CHECK: [[ADDR]]
fprintf(stderr, "World\n");
return c;
}
