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diff --git a/test/asan/TestCases/Posix/coverage-module-unloaded.cc b/test/asan/TestCases/Posix/coverage-module-unloaded.cc
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+++ b/test/asan/TestCases/Posix/coverage-module-unloaded.cc
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+// Check that unloading a module doesn't break coverage dumping for remaining
+// modules.
+// RUN: %clangxx_asan -fsanitize-coverage=func -DSHARED %s -shared -o %dynamiclib1 -fPIC
+// RUN: %clangxx_asan -fsanitize-coverage=func -DSHARED %s -shared -o %dynamiclib2 -fPIC
+// RUN: %clangxx_asan -fsanitize-coverage=func %s %libdl -o %t
+// RUN: export ASAN_OPTIONS=$ASAN_OPTIONS:coverage=1:verbosity=1
+// RUN: mkdir -p %T/coverage-module-unloaded && cd %T/coverage-module-unloaded
+// RUN: %run %t %dynamiclib1 %dynamiclib2 2>&1 | FileCheck %s
+// RUN: %run %t %dynamiclib1 %dynamiclib2 foo 2>&1 | FileCheck %s
+// RUN: rm -r %T/coverage-module-unloaded
+//
+// 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());
+ assert(argc > 2);
+ void *handle1 = dlopen(argv[1], RTLD_LAZY); // %dynamiclib1
+ assert(handle1);
+ void (*bar1)() = (void (*)())dlsym(handle1, "bar");
+ assert(bar1);
+ bar1();
+ void *handle2 = dlopen(argv[2], RTLD_LAZY); // %dynamiclib2
+ 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: coverage-module-unloaded{{.*}}1.[[PID]]
+// CHECK: coverage-module-unloaded{{.*}}2.[[PID]]
+// Even though we've unloaded one of the libs we still dump the coverage file
+// for that lib (although the data will be inaccurate, if at all useful)