0001-Adjust-for-LLVM-13-API-change.patch

From 6bb6eeaead0a80663504bbec7bbb1a32f08cfd92 Mon Sep 17 00:00:00 2001
From: Thomas Munro <thomas.munro@gmail.com>
Date: Mon, 21 Jun 2021 09:41:43 +1200
Subject: [PATCH] Adjust for LLVM 13 API change.

LLVM 13 (not yet released, but due out in a few months) has changed the
semantics of LLVMOrcAbsoluteSymbols(), so that we now need to bump a
reference count on the symbol names we give it to avoid a double-free.

Discussion: https://postgr.es/m/CA%2BhUKGLEy8mgtN7BNp0ooFAjUedDTJj5dME7NxLU-m91b85siA%40mail.gmail.com
---
 src/backend/jit/llvm/llvmjit.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/backend/jit/llvm/llvmjit.c b/src/backend/jit/llvm/llvmjit.c
index 71029a39a9..df691cbf1c 100644
--- a/src/backend/jit/llvm/llvmjit.c
+++ b/src/backend/jit/llvm/llvmjit.c
@@ -1106,6 +1106,9 @@ llvm_resolve_symbols(LLVMOrcDefinitionGeneratorRef GeneratorObj, void *Ctx,
 	{
 		const char *name = LLVMOrcSymbolStringPoolEntryStr(LookupSet[i].Name);
 
+#if LLVM_VERSION_MAJOR > 12
+		LLVMOrcRetainSymbolStringPoolEntry(LookupSet[i].Name);
+#endif
 		symbols[i].Name = LookupSet[i].Name;
 		symbols[i].Sym.Address = llvm_resolve_symbol(name, NULL);
 		symbols[i].Sym.Flags.GenericFlags = LLVMJITSymbolGenericFlagsExported;
-- 
2.30.2