[llvm] [BOLT] Account for stubs with symbols in plt (PR #192716)

[Alexey Moksyakov via llvm-commits]

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@@ -1041,8 +1041,11 @@ void RewriteInstance::discoverFileObjects() {
 
     FileSymRefs.emplace(SymbolAddress, Symbol);
 
-    // Skip section symbols that will be registered by disassemblePLT().
-    if (SymbolType == SymbolRef::ST_Debug) {
+    // Skip symbols in PLT sections that will be registered by disassemblePLT().
+    // ST_Debug covers section markers (lld/GNU ld), ST_Function covers
+    // explicit stub symbols emitted by mold (e.g., malloc$plt).
+    if (SymbolType == SymbolRef::ST_Debug ||
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yavtuk wrote:

How ST_Debug related to plt symbols? Gor it is obvious that there is plt section and the symbol has the index and address 

https://github.com/llvm/llvm-project/pull/192716