52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
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// Test that registers of running threads are included in the root set.
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// RUN: LSAN_BASE="report_objects=1:use_stacks=0"
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// RUN: %clangxx_lsan -pthread %s -o %t
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// RUN: LSAN_OPTIONS=$LSAN_BASE:"use_registers=0" %t 2>&1 | FileCheck %s
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// RUN: LSAN_OPTIONS=$LSAN_BASE:"use_registers=1" %t 2>&1
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// RUN: LSAN_OPTIONS="" %t 2>&1
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#include <assert.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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extern "C"
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void *registers_thread_func(void *arg) {
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int *sync = reinterpret_cast<int *>(arg);
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void *p = malloc(1337);
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// To store the pointer, choose a register which is unlikely to be reused by
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// a function call.
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#if defined(__i386__)
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asm ( "mov %0, %%esi"
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:
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: "r" (p)
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);
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#elif defined(__x86_64__)
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asm ( "mov %0, %%r15"
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:
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: "r" (p)
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);
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#else
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#error "Test is not supported on this architecture."
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#endif
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fprintf(stderr, "Test alloc: %p.\n", p);
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fflush(stderr);
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__sync_fetch_and_xor(sync, 1);
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while (true)
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pthread_yield();
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}
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int main() {
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int sync = 0;
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pthread_t thread_id;
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int res = pthread_create(&thread_id, 0, registers_thread_func, &sync);
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assert(res == 0);
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while (!__sync_fetch_and_xor(&sync, 0))
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pthread_yield();
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return 0;
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}
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// CHECK: Test alloc: [[ADDR:.*]].
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// CHECK: Directly leaked 1337 byte object at [[ADDR]]
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// CHECK: LeakSanitizer: detected memory leaks
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// CHECK: SUMMARY: LeakSanitizer:
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