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
976 B
C++
44 lines
976 B
C++
// Regression test for
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// https://code.google.com/p/address-sanitizer/issues/detail?id=178
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// RUN: %clangxx_asan -O0 -DSHARED_LIB %s -fPIC -shared -o %t-so.so
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// RUN: %clangxx_asan -O0 %s %libdl -Wl,--export-dynamic -o %t
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// RUN: env ASAN_OPTIONS=strict_init_order=true %run %t 2>&1
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#if defined(SHARED_LIB)
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#include <stdio.h>
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struct Bar {
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Bar(int val) : val(val) { printf("Bar::Bar(%d)\n", val); }
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int val;
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};
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int get_foo_val();
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Bar global_bar(get_foo_val());
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#else // SHARED LIB
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#include <dlfcn.h>
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#include <stdio.h>
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#include <string>
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struct Foo {
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Foo() : val(42) { printf("Foo::Foo()\n"); }
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int val;
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};
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Foo global_foo;
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int get_foo_val() {
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return global_foo.val;
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}
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int main(int argc, char *argv[]) {
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std::string path = std::string(argv[0]) + "-so.so";
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void *handle = dlopen(path.c_str(), RTLD_NOW);
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if (!handle) {
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printf("error in dlopen(): %s\n", dlerror());
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return 1;
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}
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printf("%d\n", get_foo_val());
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return 0;
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}
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#endif // SHARED_LIB
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