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61 lines
1.5 KiB
61 lines
1.5 KiB
// RUN: %clang_tsan -fno-sanitize=thread -shared -fPIC -O1 -DBUILD_SO=1 %s -o \
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// RUN: %t.so && \
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// RUN: %clang_tsan -O1 %s %t.so -o %t && %run %t 2>&1 | FileCheck %s
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// RUN: llvm-objdump -t %t | FileCheck %s --check-prefix=CHECK-DUMP
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// CHECK-DUMP: {{[.]preinit_array.*__local_tsan_preinit}}
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// SANITIZER_CAN_USE_PREINIT_ARRAY is undefined on android.
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// UNSUPPORTED: android
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// Test checks if __tsan_init is called from .preinit_array.
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// Without initialization from .preinit_array, __tsan_init will be called from
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// constructors of the binary which are called after constructors of shared
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// library.
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#include <stdio.h>
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#if BUILD_SO
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// "volatile" is needed to avoid compiler optimize-out constructors.
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volatile int counter = 0;
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volatile int lib_constructor_call = 0;
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volatile int tsan_init_call = 0;
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__attribute__ ((constructor))
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void LibConstructor() {
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lib_constructor_call = ++counter;
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};
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#else // BUILD_SO
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extern int counter;
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extern int lib_constructor_call;
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extern int tsan_init_call;
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volatile int bin_constructor_call = 0;
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__attribute__ ((constructor))
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void BinConstructor() {
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bin_constructor_call = ++counter;
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};
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namespace __tsan {
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void OnInitialize() {
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tsan_init_call = ++counter;
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}
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}
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int main() {
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// CHECK: TSAN_INIT 1
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// CHECK: LIB_CONSTRUCTOR 2
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// CHECK: BIN_CONSTRUCTOR 3
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printf("TSAN_INIT %d\n", tsan_init_call);
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printf("LIB_CONSTRUCTOR %d\n", lib_constructor_call);
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printf("BIN_CONSTRUCTOR %d\n", bin_constructor_call);
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return 0;
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}
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#endif // BUILD_SO
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