From: Timm Bäder <tbaeder@redhat.com>
Date: Sat, 7 Jan 2023 07:10:48 +0000 (+0100)
Subject: [clang][Interp][NFCI] Don't crash on void builtin functions
X-Git-Tag: upstream/17.0.6~19547
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5bf56a58775cb235b7ed9e9fcc6895b797e9721b;p=platform%2Fupstream%2Fllvm.git

[clang][Interp][NFCI] Don't crash on void builtin functions

classifyPrim() runs into a llvm_unreachable() for those.
---

diff --git a/clang/lib/AST/Interp/ByteCodeExprGen.cpp b/clang/lib/AST/Interp/ByteCodeExprGen.cpp
index aaab980ac81b..316ba6356436 100644
--- a/clang/lib/AST/Interp/ByteCodeExprGen.cpp
+++ b/clang/lib/AST/Interp/ByteCodeExprGen.cpp
@@ -1479,10 +1479,9 @@ bool ByteCodeExprGen<Emitter>::VisitBuiltinCallExpr(const CallExpr *E) {
   if (!this->emitCallBI(Func, E))
     return false;
 
-  if (DiscardResult) {
-    QualType ReturnType = E->getCallReturnType(Ctx.getASTContext());
+  QualType ReturnType = E->getCallReturnType(Ctx.getASTContext());
+  if (DiscardResult && !ReturnType->isVoidType()) {
     PrimType T = classifyPrim(ReturnType);
-
     return this->emitPop(T, E);
   }