Author: dim
Date: Sun Nov 15 11:28:02 2020
New Revision: 367704
URL: https://svnweb.freebsd.org/changeset/base/367704
Log:
MFC r367623:
Merge commit 8df4e6094 from llvm git (by Fangrui Song):
[ELF] Don't consider SHF_ALLOC ".debug*" sections debug sections
Fixes PR48071
* The Rust compiler produces SHF_ALLOC `.debug_gdb_scripts` (which
normally does not have the flag)
* `.debug_gdb_scripts` sections are removed from `inputSections` due
to --strip-debug/--strip-all
* When processing --gc-sections, pieces of a SHF_MERGE section can be
marked live separately
`=>` segfault when marking liveness of a `.debug_gdb_scripts` which
is not split into pieces (because it is not in `inputSections`)
This patch circumvents the problem by not treating SHF_ALLOC
".debug*" as debug sections (to prevent --strip-debug's stripping)
(which is still useful on its own).
Reviewed By: grimar
Differential Revision: https://reviews.llvm.org/D91291
This should fix lld segfaulting when linking the rust-based parts of the
devel/py-maturin port.
Reported by: Nick Venenga <nij...@gmail.com>
PR: 250783
Modified:
stable/11/contrib/llvm-project/lld/ELF/InputSection.h
Directory Properties:
stable/11/ (props changed)
Changes in other areas also in this revision:
Modified:
stable/12/contrib/llvm-project/lld/ELF/InputSection.h
Directory Properties:
stable/12/ (props changed)
Modified: stable/11/contrib/llvm-project/lld/ELF/InputSection.h
==============================================================================
--- stable/11/contrib/llvm-project/lld/ELF/InputSection.h Sun Nov 15
07:57:45 2020 (r367703)
+++ stable/11/contrib/llvm-project/lld/ELF/InputSection.h Sun Nov 15
11:28:02 2020 (r367704)
@@ -358,7 +358,8 @@ class InputSection : public InputSectionBase { (privat
};
inline bool isDebugSection(const InputSectionBase &sec) {
- return sec.name.startswith(".debug") || sec.name.startswith(".zdebug");
+ return (sec.flags & llvm::ELF::SHF_ALLOC) == 0 &&
+ (sec.name.startswith(".debug") || sec.name.startswith(".zdebug"));
}
// The list of all input sections.
_______________________________________________
svn-src-all@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
