================
@@ -1071,6 +1077,15 @@ void ObjectFilePECOFF::CreateSections(SectionList 
&unified_section_list) {
       m_sections_up->AddSection(section_sp);
       unified_section_list.AddSection(section_sp);
     }
+
+    if (!truncated_dwarf_sections.empty())
+      module_sp->ReportWarning(
+          "contains {} truncated DWARF sections ({}).\n"
+          "Executable images on Windows can't include the required names "
+          "when linking with the default link.exe. A third party linker like "
+          "lld-link is required (compile with -fuse-ld=lld-link on Clang).",
----------------
DavidSpickett wrote:

I understand this as written but it would benefit from rephrasing to be clearer 
without extra context. Also the names are truncated not the section data, which 
this implies.

How about:
```
contains {} DWARF sections with truncated names ({}).\n
Windows executable (PECOFF) images produced by link.exe cannot include the 
required section names due to a restriction on section name length. A third 
party linker like lld-link is required (compile with -fuse-ld=lld-link when 
using Clang)."
```

https://github.com/llvm/llvm-project/pull/145175
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