forked from OSchip/llvm-project
69708477be
Hide __llvm_profile_raw_version so as not to resolve reference from a dependent shared object. Since libclang_rt.profile is added later in the command line, a definition of __llvm_profile_raw_version is not included if it is provided from an earlier object, e.g. from a shared dependency. This causes an extra dependence edge where if libA.so depends on libB.so and both are coverage-instrumented, libA.so uses libB.so's definition of __llvm_profile_raw_version. This leads to a runtime link failure if the libB.so available at runtime does not provide this symbol (but provides the other dependent symbols). Such a scenario can occur in Android's mainline modules. E.g.: ld -o libB.so libclang_rt.profile-x86_64.a ld -o libA.so -l B libclang_rt.profile-x86_64.a libB.so has a global definition of __llvm_profile_raw_version. libA.so uses libB.so's definition of __llvm_profile_raw_version. At runtime, libB.so may not be coverage-instrumented (i.e. not export __llvm_profile_raw_version) so runtime linking of libA.so will fail. Marking this symbol as hidden forces each binary to use the definition of __llvm_profile_raw_version from libclang_rt.profile. Differential Revision: https://reviews.llvm.org/D111759 |
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| .. | ||
| cmake | ||
| docs | ||
| include | ||
| lib | ||
| test | ||
| tools | ||
| unittests | ||
| utils | ||
| www | ||
| .clang-tidy | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CODE_OWNERS.TXT | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||
| README.txt | ||
README.txt
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================