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Commit9b4e4cf

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Prepare for forthcoming LLVM 13 API change.
LLVM 13 (due out in September) has changed the semantics ofLLVMOrcAbsoluteSymbols(), so we need to bump some reference counts toavoid a double-free that causes crashes and bad query results.A proactive change seems necessary to avoid having a window of timewhere our respective latest releases would interact badly. It'spossible that the situation could change before then, though.Thanks to Fabien Coelho for monitoring bleeding edge LLVM and AndresFreund for tracking down the change.Back-patch to 11, where the JIT code arrived.Discussion:https://postgr.es/m/CA%2BhUKGLEy8mgtN7BNp0ooFAjUedDTJj5dME7NxLU-m91b85siA%40mail.gmail.com
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‎src/backend/jit/llvm/llvmjit.c

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@@ -1106,6 +1106,9 @@ llvm_resolve_symbols(LLVMOrcDefinitionGeneratorRef GeneratorObj, void *Ctx,
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{
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constchar*name=LLVMOrcSymbolStringPoolEntryStr(LookupSet[i].Name);
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#ifLLVM_VERSION_MAJOR>12
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LLVMOrcRetainSymbolStringPoolEntry(LookupSet[i].Name);
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#endif
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symbols[i].Name=LookupSet[i].Name;
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symbols[i].Sym.Address=llvm_resolve_symbol(name,NULL);
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symbols[i].Sym.Flags.GenericFlags=LLVMJITSymbolGenericFlagsExported;

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