https://github.com/tbaederr created 
https://github.com/llvm/llvm-project/pull/218837

I *think* this is the problem here. I thought since I'm not specifying a target 
triple, the host triple would always be used.

I've locally checked that elemSize() returns the correct value when changing 
the target triple and that works.

The previous approach caused problems on some builders, see 
https://github.com/llvm/llvm-project/pull/218707#issuecomment-5417327986 
https://github.com/llvm/llvm-project/pull/216736#issuecomment-5419450306

>From 3bedca55e94ac60e5eacd3517f6c19ba4d1087fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timm=20B=C3=A4der?= <[email protected]>
Date: Wed, 26 Aug 2026 07:13:59 +0200
Subject: [PATCH] [clang][bytecode][test] Test elem size against target wchar

I *think* this is the problem here. I thought since I'm not specifying a
target triple, the host triple would always be used.

I've locally checked that elemSize() returns the correct value when
changing the target triple and that works.

The previous approach caused problems on some builders, see
https://github.com/llvm/llvm-project/pull/218707#issuecomment-5417327986
https://github.com/llvm/llvm-project/pull/216736#issuecomment-5419450306
---
 clang/unittests/AST/ByteCode/Pointer.cpp | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/clang/unittests/AST/ByteCode/Pointer.cpp 
b/clang/unittests/AST/ByteCode/Pointer.cpp
index 7541a588f526a..a93222ad05c12 100644
--- a/clang/unittests/AST/ByteCode/Pointer.cpp
+++ b/clang/unittests/AST/ByteCode/Pointer.cpp
@@ -287,6 +287,10 @@ TEST(Pointer, Strings) {
           .getNodeAs<VarDecl>("str1");
   ASSERT_NE(D, nullptr);
 
+  auto getWCharWidth = [&ASTCtx]() -> unsigned {
+    return ASTCtx.getTargetInfo().getWCharWidth() / 8;
+  };
+
   const auto &Ctx = AST->getASTContext().getInterpContext();
   Program &Prog = Ctx.getProgram();
   ASSERT_TRUE(Prog.getGlobal(D));
@@ -315,7 +319,7 @@ TEST(Pointer, Strings) {
   Pointee = GlobalPtr.load<Pointer>();
   ASSERT_TRUE(Pointee.isStringPointer());
   ASSERT_EQ(Pointee.getNumElems(), 7u);
-  ASSERT_EQ(Pointee.elemSize(), sizeof(wchar_t));
+  ASSERT_EQ(Pointee.elemSize(), getWCharWidth());
 
   D = match(varDecl(hasGlobalStorage(), hasName("c")).bind("c"), ASTCtx)[0]
           .getNodeAs<VarDecl>("c");
@@ -327,13 +331,12 @@ TEST(Pointer, Strings) {
   Pointee = GlobalPtr.load<Pointer>();
   ASSERT_TRUE(Pointee.isStringPointer());
   ASSERT_EQ(Pointee.getNumElems(), 7u);
-  ASSERT_EQ(Pointee.elemSize(), sizeof(wchar_t));
+  ASSERT_EQ(Pointee.elemSize(), getWCharWidth());
   ASSERT_EQ(Pointee.getIndex(), 5u);
   APValue APV = Pointee.toAPValue(ASTCtx);
   ASSERT_TRUE(APV.isLValue());
   ASSERT_FALSE(APV.isLValueOnePastTheEnd());
-  ASSERT_EQ(static_cast<size_t>(APV.getLValueOffset().getQuantity()),
-            5 * sizeof(wchar_t));
+  ASSERT_EQ(APV.getLValueOffset().getQuantity(), 5u * getWCharWidth());
   ASSERT_TRUE(APV.hasLValuePath());
   const auto &Path = APV.getLValuePath();
   ASSERT_EQ(Path.size(), 1u);

_______________________________________________
cfe-commits mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

Reply via email to