[PATCH] D61889: [ELF] --gdb-index: fix SIGSEGV when a DWARFAddressRange has invalid SectionIndex

[Fangrui Song via Phabricator via llvm-commits]

MaskRay created this revision.
Herald added subscribers: llvm-commits, arphaman, arichardson, emaste.
Herald added a reviewer: espindola.
Herald added a project: LLVM.

Repository:
  rLLD LLVM Linker

https://reviews.llvm.org/D61889

Files:
  ELF/SyntheticSections.cpp


Index: ELF/SyntheticSections.cpp
===================================================================
--- ELF/SyntheticSections.cpp
+++ ELF/SyntheticSections.cpp
@@ -2367,6 +2367,8 @@
 
     ArrayRef<InputSectionBase *> Sections = Sec->File->getSections();
     for (DWARFAddressRange &R : *Ranges) {
+      if (R.SectionIndex == -1ULL)
+        continue;
       InputSectionBase *S = Sections[R.SectionIndex];
       if (!S || S == &InputSection::Discarded || !S->Live)
         continue;


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