[llvm] c5ecf5a - Fix compression header size check in ELF writer (#66888)

[via llvm-commits]

Author: myxoid
Date: 2023-11-05T15:33:20-08:00
New Revision: c5ecf5a130f087f493802800f3565c7bb75c238a

URL: https://github.com/llvm/llvm-project/commit/c5ecf5a130f087f493802800f3565c7bb75c238a
DIFF: https://github.com/llvm/llvm-project/commit/c5ecf5a130f087f493802800f3565c7bb75c238a.diff

LOG: Fix compression header size check in ELF writer (#66888)

The test had 32-bit and 64-bit header sizes the wrong way around.

Added: 
    

Modified: 
    llvm/lib/MC/ELFObjectWriter.cpp

Removed: 
    


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diff  --git a/llvm/lib/MC/ELFObjectWriter.cpp b/llvm/lib/MC/ELFObjectWriter.cpp
index 8490fefe7ff5351..e4d18d8a7dd5b54 100644
--- a/llvm/lib/MC/ELFObjectWriter.cpp
+++ b/llvm/lib/MC/ELFObjectWriter.cpp
@@ -843,7 +843,7 @@ bool ELFWriter::maybeWriteCompression(
     uint32_t ChType, uint64_t Size,
     SmallVectorImpl<uint8_t> &CompressedContents, Align Alignment) {
   uint64_t HdrSize =
-      is64Bit() ? sizeof(ELF::Elf32_Chdr) : sizeof(ELF::Elf64_Chdr);
+      is64Bit() ? sizeof(ELF::Elf64_Chdr) : sizeof(ELF::Elf32_Chdr);
   if (Size <= HdrSize + CompressedContents.size())
     return false;
   // Platform specific header is followed by compressed data.