1 files changed, 56 insertions, 0 deletions
diff --git a/test/asan/TestCases/Linux/coverage-module-unloaded.cc b/test/asan/TestCases/Linux/coverage-module-unloaded.cc
new file mode 100644
index 000000000000..449841e78189
--- /dev/null
+++ b/test/asan/TestCases/Linux/coverage-module-unloaded.cc
@@ -0,0 +1,56 @@
+// Check that unloading a module doesn't break coverage dumping for remaining
+// modules.
+// RUN: %clangxx_asan -fsanitize-coverage=1 -DSHARED %s -shared -o %T/libcoverage_module_unloaded_test_1.so -fPIC
+// RUN: %clangxx_asan -fsanitize-coverage=1 -DSHARED %s -shared -o %T/libcoverage_module_unloaded_test_2.so -fPIC
+// RUN: %clangxx_asan -fsanitize-coverage=1 -DSO_DIR=\"%T\" %s -o %t
+// RUN: export ASAN_OPTIONS=coverage=1:verbosity=1
+// RUN: mkdir -p %T/coverage-module-unloaded && cd %T/coverage-module-unloaded
+// RUN: %run %t 2>&1         | FileCheck %s
+// RUN: %run %t foo 2>&1         | FileCheck %s
+// RUN: cd .. && rm coverage-module-unloaded -r
+//
+// https://code.google.com/p/address-sanitizer/issues/detail?id=263
+// XFAIL: android
+
+#include <assert.h>
+#include <dlfcn.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#ifdef SHARED
+extern "C" {
+void bar() { printf("bar\n"); }
+}
+#else
+
+int main(int argc, char **argv) {
+  fprintf(stderr, "PID: %d\n", getpid());
+  void *handle1 =
+      dlopen(SO_DIR "/libcoverage_module_unloaded_test_1.so", RTLD_LAZY);
+  assert(handle1);
+  void (*bar1)() = (void (*)())dlsym(handle1, "bar");
+  assert(bar1);
+  bar1();
+  void *handle2 =
+      dlopen(SO_DIR "/libcoverage_module_unloaded_test_2.so", RTLD_LAZY);
+  assert(handle2);
+  void (*bar2)() = (void (*)())dlsym(handle2, "bar");
+  assert(bar2);
+  bar2();
+
+  // It matters whether the unloaded module has a higher or lower address range
+  // than the remaining one. Make sure to test both cases.
+  if (argc < 2)
+    dlclose(bar1 < bar2 ? handle1 : handle2);
+  else
+    dlclose(bar1 < bar2 ? handle2 : handle1);
+  return 0;
+}
+#endif
+
+// CHECK: PID: [[PID:[0-9]+]]
+// CHECK: [[PID]].sancov: 1 PCs written
+// CHECK: .so.[[PID]]
+// If we get coverage for both DSOs, it means the module wasn't unloaded and
+// this test is useless.
+// CHECK-NOT: .so.[[PID]]