[llvm] [DWARFLinker] Adjust DW_AT_LLVM_stmt_sequence for rewritten line tables (PR #128953)

[Jonas Devlieghere via llvm-commits]

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@@ -1068,6 +1069,11 @@ void DwarfStreamer::emitLineTableRows(
   unsigned RowsSinceLastSequence = 0;
 
   for (const DWARFDebugLine::Row &Row : LineTable.Rows) {
+    // If we're tracking row offsets, record the current section size as the
+    // offset of this row.
+    if (RowOffsets)
+      RowOffsets->push_back(LineSectionSize);
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JDevlieghere wrote:

When we're done the rows and row offsets should contain the same number of elements. Can you add an `assert(! RowOffsets || LineTable.Rows.size() == RowOffsets->size())` after the loop to make sure nobody does an early return or something in the future that would break this invariant?  

https://github.com/llvm/llvm-project/pull/128953