| commit | 8c5f1ab241f06469c8039a6fa31fb19387824427 | [log] [tgz] |
|---|---|---|
| author | Fangrui Song <maskray@google.com> | Tue May 28 14:34:28 2019 +0000 |
| committer | Fangrui Song <maskray@google.com> | Tue May 28 14:34:28 2019 +0000 |
| tree | efe2ad28f463e11d5b9be2a42b488bd8f711c9b3 | |
| parent | 69475cb5da6496681892faf31f9d507a20eac38e [diff] |
Reland D61583 [ELF] Error on relocations to STT_SECTION symbols if the sections were discarded This is implemented by creating Undefined (instead of Defined) for such local STT_SECTION symbols. It allows us to catch errors when there are relocations to such discarded sections (e.g. in PR41693, ld.bfd and gold error but we don't). Updated comdat-discarded-error.s checks we emit friendly error message. For relocatable-eh-frame.s, ld.lld -r a.o a.o will now error "STT_SECTION symbol should be defined" because the section .eh_frame refers to is now an Undefined instead of a Defined. So I have to change `error()` to `warn()` to retain the output. rLLD361144 inadvertently enabled the error for --gdb-index (in LLDDwarfObj<ELFT>::findAux()). Relocations from .debug_info (not in comdat) to .text.* (in comdat) for DW_AT_low_pc are common. If an .text.* was discarded, rLLD361144 would error, which was unexpected. (Note, if we don't error as this patch does, InputSection::relocateNonAlloc() will resolve such relocations). git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@361830 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.