[lld] [LLD] Tombstone LocalTU entry in .debug_names (PR #70701)

[David Blaikie via llvm-commits]

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@@ -896,6 +893,16 @@ void InputSection::relocateNonAlloc(uint8_t *buf, ArrayRef<RelTy> rels) {
       break;
     }
 
+  const uint64_t debugTombstone = StringSwitch<uint64_t>(name)
+                                      .Case(".debug_ranges", 1)
+                                      .Case(".debug_loc", 1)
+                                      .Case(".debug_names", llvm::maxUIntN(32))
+                                      .Default(0);
+  // If -z dead-reloc-in-nonalloc= is specified, respect it.
+  if (!tombstone && isDebug)
+    tombstone = debugTombstone;
+  else if (tombstone)
+    tombstone = SignExtend64<bits>(*tombstone);
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dwblaikie wrote:

if this is sign extended to 64 bits, but then we have a 32 bit relocation, I'd expect this fails/errors out?

https://github.com/llvm/llvm-project/pull/70701