Diff below works around a crash provoked by the
/DISCARD/ :
{
*(.ARM.exidx)
}
fragment in the kernel linker script. It seems this issue is already
fixed upstream in a different way. But backporting that fix isn't
trivial.
ok?
Index: gnu/llvm/tools/lld/ELF/SyntheticSections.cpp
===================================================================
RCS file: /cvs/src/gnu/llvm/tools/lld/ELF/SyntheticSections.cpp,v
retrieving revision 1.7
diff -u -p -r1.7 SyntheticSections.cpp
--- gnu/llvm/tools/lld/ELF/SyntheticSections.cpp 6 Apr 2018 14:38:28
-0000 1.7
+++ gnu/llvm/tools/lld/ELF/SyntheticSections.cpp 2 Jun 2018 12:16:06
-0000
@@ -2571,6 +2571,9 @@ void ARMExidxSentinelSection::writeTo(ui
// The sentinel has to be removed if there are no other .ARM.exidx entries.
bool ARMExidxSentinelSection::empty() const {
OutputSection *OS = getParent();
+ if (!OS)
+ return false;
+
for (auto *B : OS->SectionCommands)
if (auto *ISD = dyn_cast<InputSectionDescription>(B))
for (auto *S : ISD->Sections)
