f535d33fee
Revise the fix to https://code.google.com/p/address-sanitizer/issues/detail?id=178: always disable strict init-order checking the first time dlopen() is called: at this point shared library is allowed to access globals defined in the main executable, as they are guaranteed to be initialized. Revise the test cases: * simplify init-order-dlopen.cc test case: make it Linux-specific (there's no strict init-order checking on other platforms anyway), and single-threaded. * reinforce init-order-pthread-create.cc test case: make sure that init-order checker would produce a false positive unless we turn it off at the moment we call pthread_create(). llvm-svn: 230288
44 lines
989 B
C++
44 lines
989 B
C++
// Check that init-order checking is properly disabled if pthread_create is
|
|
// called.
|
|
|
|
// RUN: %clangxx_asan %s %p/Helpers/init-order-pthread-create-extra.cc -pthread -o %t
|
|
// RUN: env ASAN_OPTIONS=strict_init_order=true %run %t
|
|
|
|
#include <stdio.h>
|
|
#include <pthread.h>
|
|
#include <unistd.h>
|
|
|
|
void *bar(void *input, bool sleep_before_init) {
|
|
if (sleep_before_init)
|
|
usleep(500000);
|
|
return input;
|
|
}
|
|
|
|
void *glob = bar((void*)0x1234, false);
|
|
extern void *glob2;
|
|
|
|
void *poll(void *arg) {
|
|
void **glob = (void**)arg;
|
|
while (true) {
|
|
usleep(100000);
|
|
printf("glob is now: %p\n", *glob);
|
|
}
|
|
}
|
|
|
|
struct GlobalPollerStarter {
|
|
GlobalPollerStarter() {
|
|
pthread_t p;
|
|
pthread_attr_t attr;
|
|
pthread_attr_init(&attr);
|
|
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
|
|
pthread_create(&p, 0, poll, &glob);
|
|
pthread_attr_destroy(&attr);
|
|
printf("glob poller is started");
|
|
}
|
|
} global_poller;
|
|
|
|
int main() {
|
|
printf("%p %p\n", glob, glob2);
|
|
return 0;
|
|
}
|