| commit | ed673fddf832ed44e04c7960d89e4b6a2d2afef0 | [log] [tgz] |
|---|---|---|
| author | Fangrui Song <maskray@google.com> | Thu Dec 27 22:24:45 2018 +0000 |
| committer | Fangrui Song <maskray@google.com> | Thu Dec 27 22:24:45 2018 +0000 |
| tree | 88732bd23da80dd00fb3bf830b36174657b05687 | |
| parent | 16774fce20ec9d04a6bec871911e5b0e7d93eb9b [diff] |
[ELF] A shared object is needed if any of its occurrences is needed Summary: If a DSO appears more than once with and without --as-needed, ld.bfd and gold consider --no-as-needed to takes precedence over --as-needed. lld didn't and this patch makes it do so. This makes it a bit away from the position-dependent behavior (how different occurrences of the same DSO interact) and protects us from some mysterious runtime errors: if some interceptor libraries add their own --no-as-needed dependencies (e.g. librt.so), and the user application specifies -Wl,--as-needed -lrt , the absence of the DT_NEEDED entry would make dlsym(RTLD_NEXT, "clock_gettime") return NULL and would break at runtime. Reviewers: ruiu, espindola Reviewed By: ruiu Subscribers: emaste, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D56089 git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@350105 91177308-0d34-0410-b5e6-96231b3b80d8
This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.
lld is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.
In order to make sure various developers can evaluate patches over the same tests, we create a collection of self contained programs.
It is hosted at https://s3-us-west-2.amazonaws.com/linker-tests/lld-speed-test.tar.xz
The current sha256 is 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.