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// Test that registers of running threads are included in the root set.
// RUN: %clangxx_lsan -pthread %s -o %t
// RUN: %env_lsan_opts="report_objects=1:use_stacks=0:use_registers=0" not %run %t 2>&1 | FileCheck %s
// RUN: %env_lsan_opts="report_objects=1:use_stacks=0:use_registers=1" %run %t 2>&1
// RUN: %env_lsan_opts="" %run %t 2>&1
#include "sanitizer_common/print_address.h"
#include <assert.h>
#include <pthread.h>
#include <sched.h>
#include <stdio.h>
#include <stdlib.h>
int sync = 0;
extern "C" void *registers_thread_func(void *) {
void *p = malloc(1337);
print_address("Test alloc: ", 1, p);
fflush(stderr);
while(true) {
// To store the pointer, choose a register which is unlikely to be reused by
// a function call.
#if defined(__i386__) || defined(__i686__)
asm("mov %0, %%edi"
:
: "r"(p));
#elif defined(__x86_64__)
asm("mov %0, %%r15"
:
: "r"(p));
#elif defined(__mips__)
asm("move $16, %0"
:
: "r"(p));
#elif defined(__arm__)
asm("mov r5, %0"
:
: "r"(p));
#elif defined(__aarch64__)
// x9-10 are used. x11-12 are probably used.
// So we pick x13 to be safe and x14 as a backup.
// (x13 known to be used on Ubuntu Focal)
asm("mov x13, %0\n"
"mov x14, %0"
:
: "r"(p));
#elif defined(__loongarch_lp64)
asm("move $s8, %0" : : "r"(p));
#elif defined(__powerpc__)
asm("mr 30, %0"
:
: "r"(p));
#elif defined(__s390x__)
asm("lgr %%r10, %0"
:
: "r"(p));
#elif defined(__riscv)
asm("mv s11, %0"
:
: "r"(p));
#else
#error "Test is not supported on this architecture."
#endif
__sync_fetch_and_xor(&sync, 1);
}
}
int main() {
pthread_t thread_id;
int res = pthread_create(&thread_id, 0, registers_thread_func, nullptr);
assert(res == 0);
while (!__sync_fetch_and_xor(&sync, 0))
sched_yield();
return 0;
}
// CHECK: Test alloc: [[ADDR:0x[0-9,a-f]+]]
// CHECK: LeakSanitizer: detected memory leaks
// CHECK: [[ADDR]] (1337 bytes)
// CHECK: SUMMARY: {{.*}}Sanitizer:
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