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George Rimar 1136ec64e8 [ELF] - Fix crash relative to SHF_LINK_ORDER sections. 
Our code assumes all input sections in an output SHF_LINK_ORDER
section has SHF_LINK_ORDER flag. We do not check that and that can cause a crash.

That happens because we call 
std::stable_sort(Sections.begin(), Sections.end(), compareByFilePosition);, 
where compareByFilePosition predicate does not expect to see
null when calls getLinkOrderDep. 

The same might happen when sections refer to non-regular sections. 
Test cases demonstrate the issues, patch fixes them.

Differential revision: https://reviews.llvm.org/D44193

llvm-svn: 327006
 		2018-03-08 15:06:58 +00:00
..
COFF [COFF] Make the DOS stub a real DOS program 2018-03-08 14:27:28 +00:00
Common Make sure that clang-format doesn't reorder include files. 2018-02-28 21:32:24 +00:00
ELF [ELF] - Fix crash relative to SHF_LINK_ORDER sections. 2018-03-08 15:06:58 +00:00
MinGW [MinGW] Fix --{start,end}-group. 2018-03-01 20:38:38 +00:00
cmake/modules [lld] Switch to add_llvm_install_targets 2017-12-01 04:17:45 +00:00
docs Update man page for long opts that accept = after r326506 2018-03-02 02:57:12 +00:00
include/lld Merge {COFF,ELF}/Strings.cpp to Common/Strings.cpp. 2018-02-28 17:38:19 +00:00
lib [ELF] Fix IsPreemptible comment and typo. NFC 2018-02-23 21:57:49 +00:00
test [ELF] - Fix crash relative to SHF_LINK_ORDER sections. 2018-03-08 15:06:58 +00:00
tools/lld Remove "--full-shutdown" and instead use an environment variable LLD_IN_TEST. 2018-02-16 23:41:48 +00:00
unittests [CMake] Use PRIVATE in target_link_libraries for executables 2017-12-05 21:49:56 +00:00
utils Add a script to run various benchmarks and send the result to lnt. 2017-11-14 16:40:30 +00:00
wasm [WebAssembly] Add except_ref as a first-class type 2018-03-08 04:06:57 +00:00
.arcconfig [lld] Set up .arcconfig to point to new Diffusion LLD repository 2017-12-06 20:56:23 +00:00
.clang-format
…
.gitignore
…
CMakeLists.txt [WebAssembly] Initial wasm linker implementation 2017-11-17 18:14:09 +00:00
CODE_OWNERS.TXT [WebAssembly] Initial wasm linker implementation 2017-11-17 18:14:09 +00:00
LICENSE.TXT
…
README.md Note that the test .tar.xz has been updated. 2017-12-22 19:37:32 +00:00

README.md

LLVM Linker (lld)

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.

Benchmarking

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.