[llvm] [XCOFF] make related SD symbols as isFunction (PR #69553)

[Chen Zheng via llvm-commits]

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@@ -1288,7 +1288,7 @@ Expected<bool> XCOFFSymbolRef::isFunction() const {
   if (CsectAuxRef.getSymbolType() == XCOFF::XTY_LD)
     return true;
 
-  return false;
+  return createError("csect symbol has no valid symbol type.");
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chenzheng1030 wrote:

OK. Updated.

https://github.com/llvm/llvm-project/pull/69553