[lld] [lld][NFC] Silence -Wuninitialized GCC warnings. (PR #75183)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-platform-windows

@llvm/pr-subscribers-lld-coff

Author: Jacek Caban (cjacek)

<details>
<summary>Changes</summary>

A workaround for warnings reported in #<!-- -->69101. Use of those variables is guarded by lastType, so I don't think that they are actually used uninitialized and I don't see the warning on GCC 12.3.

---
Full diff: https://github.com/llvm/llvm-project/pull/75183.diff


1 Files Affected:

- (modified) lld/COFF/Writer.cpp (+1-1) 


``````````diff
diff --git a/lld/COFF/Writer.cpp b/lld/COFF/Writer.cpp
index 7b1ff8071e2e3..89e0f5b2df744 100644
--- a/lld/COFF/Writer.cpp
+++ b/lld/COFF/Writer.cpp
@@ -560,7 +560,7 @@ void Writer::createECCodeMap() {
   codeMap.clear();
 
   std::optional<chpe_range_type> lastType;
-  Chunk *first, *last;
+  Chunk *first = nullptr, *last = nullptr;
 
   auto closeRange = [&]() {
     if (lastType) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/75183