ceea5466eb
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 llvm-svn: 319365
46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
// Check that when launching with DYLD_INSERT_LIBRARIES, we properly remove
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// the ASan dylib from the environment variable (both when using an absolute
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// or relative path) and also that the other dylibs are left untouched.
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// UNSUPPORTED: ios
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// RUN: rm -rf %t && mkdir -p %t
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// RUN: cp `%clang_asan -print-file-name=lib`/darwin/libclang_rt.asan_osx_dynamic.dylib \
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// RUN: %t/libclang_rt.asan_osx_dynamic.dylib
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// RUN: %clangxx_asan %s -o %t/a.out
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// RUN: %clangxx -DSHARED_LIB %s \
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// RUN: -dynamiclib -o %t/dummy-so.dylib
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// RUN: ( cd %t && \
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// RUN: DYLD_INSERT_LIBRARIES=@executable_path/libclang_rt.asan_osx_dynamic.dylib:dummy-so.dylib \
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// RUN: %run ./a.out 2>&1 ) | FileCheck %s || exit 1
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// RUN: ( cd %t && \
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// RUN: DYLD_INSERT_LIBRARIES=libclang_rt.asan_osx_dynamic.dylib:dummy-so.dylib \
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// RUN: %run ./a.out 2>&1 ) | FileCheck %s || exit 1
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// RUN: ( cd %t && \
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// RUN: %env_asan_opts=strip_env=0 \
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// RUN: DYLD_INSERT_LIBRARIES=libclang_rt.asan_osx_dynamic.dylib:dummy-so.dylib \
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// RUN: %run ./a.out 2>&1 ) | FileCheck %s --check-prefix=CHECK-KEEP || exit 1
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// RUN: ( cd %t && \
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// RUN: DYLD_INSERT_LIBRARIES=%t/libclang_rt.asan_osx_dynamic.dylib:dummy-so.dylib \
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// RUN: %run ./a.out 2>&1 ) | FileCheck %s || exit 1
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#if !defined(SHARED_LIB)
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#include <stdio.h>
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#include <stdlib.h>
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int main() {
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const char kEnvName[] = "DYLD_INSERT_LIBRARIES";
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printf("%s=%s\n", kEnvName, getenv(kEnvName));
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// CHECK: {{DYLD_INSERT_LIBRARIES=dummy-so.dylib}}
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// CHECK-KEEP: {{DYLD_INSERT_LIBRARIES=libclang_rt.asan_osx_dynamic.dylib:dummy-so.dylib}}
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return 0;
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}
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#else // SHARED_LIB
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void foo() {}
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#endif // SHARED_LIB
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