55 lines · cpp
1// Check that unloading a module doesn't break coverage dumping for remaining2// modules.3// RUN: mkdir -p %t.dir && cd %t.dir4// RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard -DSHARED %s -shared -o %dynamiclib1 -fPIC5// RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard -DSHARED %s -shared -o %dynamiclib2 -fPIC6// RUN: %clangxx_asan -fsanitize-coverage=func,trace-pc-guard %s %libdl -o %t.dir/exe7// RUN: mkdir -p %t.tmp/coverage-module-unloaded && cd %t.tmp/coverage-module-unloaded8// RUN: %env_asan_opts=coverage=1:verbosity=1 %run %t.dir/exe %dynamiclib1 %dynamiclib2 2>&1 | FileCheck %s9// RUN: %env_asan_opts=coverage=1:verbosity=1 %run %t.dir/exe %dynamiclib1 %dynamiclib2 foo 2>&1 | FileCheck %s10//11// https://code.google.com/p/address-sanitizer/issues/detail?id=26312// XFAIL: android13// UNSUPPORTED: ios14 15#include <assert.h>16#include <dlfcn.h>17#include <stdint.h>18#include <stdio.h>19#include <unistd.h>20 21#ifdef SHARED22extern "C" {23void bar() { printf("bar\n"); }24}25#else26 27int main(int argc, char **argv) {28 fprintf(stderr, "PID: %d\n", getpid());29 assert(argc > 2);30 void *handle1 = dlopen(argv[1], RTLD_LAZY); // %dynamiclib131 assert(handle1);32 void (*bar1)() = (void (*)())dlsym(handle1, "bar");33 assert(bar1);34 bar1();35 void *handle2 = dlopen(argv[2], RTLD_LAZY); // %dynamiclib236 assert(handle2);37 void (*bar2)() = (void (*)())dlsym(handle2, "bar");38 assert(bar2);39 bar2();40 41 // It matters whether the unloaded module has a higher or lower address range42 // than the remaining one. Make sure to test both cases.43 bool lt = reinterpret_cast<uintptr_t>(bar1) < reinterpret_cast<uintptr_t>(bar2);44 if (argc < 2)45 dlclose(lt ? handle1 : handle2);46 else47 dlclose(lt ? handle2 : handle1);48 return 0;49}50#endif51 52// CHECK: PID: [[PID:[0-9]+]]53// CHECK-DAG: exe{{.*}}[[PID]].sancov: {{.*}}PCs written54// CHECK-DAG: dynamic{{.*}}[[PID]].sancov: {{.*}}PCs written55