[llvm] [ARMAsmBackend] Add checks for relocation addends in assembler (PR #109969)

[Peter Smith via llvm-commits]

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@@ -1121,7 +1132,7 @@ void ARMAsmBackend::applyFixup(const MCAssembler &Asm, const MCFixup &Fixup,
   assert(Offset + NumBytes <= Data.size() && "Invalid fixup offset!");
 
   // Used to point to big endian bytes.
-  unsigned FullSizeBytes;
+  unsigned FullSizeBytes = 0;
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smithp35 wrote:

Is this necessary for this patch? If not then it could be moved out into a separate NFC refactor.

Looking at the code FullSizeBytes is only used when big endian, so it is always initialized when used. Is this tripping over a static analysis tool?


https://github.com/llvm/llvm-project/pull/109969