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authorKuba Mracek <mracek@apple.com>2017-11-29 21:42:48 +0000
committerKuba Mracek <mracek@apple.com>2017-11-29 21:42:48 +0000
commit82ff537a07bdee654821abb4a2b7212de54301f4 (patch)
tree691a408e3af97a0f6ae20e560b8097c9e339d57a /test
parentd5df99b6ebd467163425ed288969f82f85068564 (diff)
[sanitizer] Add 'strip_env' flag to enable/disable removing sanitizer dylib from DYLD_INSERT_LIBRARIES
On macOS, we usually don't require launching the target with DYLD_INSERT_LIBRARIES anymore. However, it is still necessary when running a target that is not instrumented (and e.g. dlopen's an instrument library later). In any case, ASan and TSan currently remove themselves from the DYLD_INSERT_LIBRARIES environment variable to avoid passing it onto children. This works well e.g. when instrumenting a shell. A problem arises when the target is a non-instrumented shim (e.g. "xcrun") that either re-execs or launches a child that is supposed to get DYLD_INSERT_LIBRARIES propagated. To support this mode, this patch introduces 'strip_env' flag that can be used to keep DYLD_INSERT_LIBRARIES untouched. Differential Revision: https://reviews.llvm.org/D39991 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@319365 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r--test/asan/TestCases/Darwin/dyld_insert_libraries_remove.cc6
1 files changed, 6 insertions, 0 deletions
diff --git a/test/asan/TestCases/Darwin/dyld_insert_libraries_remove.cc b/test/asan/TestCases/Darwin/dyld_insert_libraries_remove.cc
index 8a02105f6..0672e064a 100644
--- a/test/asan/TestCases/Darwin/dyld_insert_libraries_remove.cc
+++ b/test/asan/TestCases/Darwin/dyld_insert_libraries_remove.cc
@@ -21,6 +21,11 @@
// RUN: %run ./a.out 2>&1 ) | FileCheck %s || exit 1
// RUN: ( cd %t && \
+// RUN: %env_asan_opts=strip_env=0 \
+// RUN: DYLD_INSERT_LIBRARIES=libclang_rt.asan_osx_dynamic.dylib:dummy-so.dylib \
+// RUN: %run ./a.out 2>&1 ) | FileCheck %s --check-prefix=CHECK-KEEP || exit 1
+
+// RUN: ( cd %t && \
// RUN: DYLD_INSERT_LIBRARIES=%t/libclang_rt.asan_osx_dynamic.dylib:dummy-so.dylib \
// RUN: %run ./a.out 2>&1 ) | FileCheck %s || exit 1
@@ -32,6 +37,7 @@ int main() {
const char kEnvName[] = "DYLD_INSERT_LIBRARIES";
printf("%s=%s\n", kEnvName, getenv(kEnvName));
// CHECK: {{DYLD_INSERT_LIBRARIES=dummy-so.dylib}}
+ // CHECK-KEEP: {{DYLD_INSERT_LIBRARIES=libclang_rt.asan_osx_dynamic.dylib:dummy-so.dylib}}
return 0;
}
#else // SHARED_LIB