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[CUDA] Enable variadic argument support in front-end #161305

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Merged
merged 1 commit into from
Sep 30, 2025
+3 −4
Merged

[CUDA] Enable variadic argument support in front-end #161305

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5 changes: 2 additions & 3 deletions clang/lib/Sema/SemaExpr.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -16791,12 +16791,11 @@ ExprResult Sema::BuildVAArgExpr(SourceLocation BuiltinLoc,
Expr *OrigExpr = E;
bool IsMS = false;

// CUDA device code does not support varargs.
// CUDA device global function does not support varargs.
if (getLangOpts().CUDA && getLangOpts().CUDAIsDevice) {
if (const FunctionDecl *F = dyn_cast<FunctionDecl>(CurContext)) {
CUDAFunctionTarget T = CUDA().IdentifyTarget(F);
if (T == CUDAFunctionTarget::Global || T == CUDAFunctionTarget::Device ||
T == CUDAFunctionTarget::HostDevice)
if (T == CUDAFunctionTarget::Global)
return ExprError(Diag(E->getBeginLoc(), diag::err_va_arg_in_device));
}
}
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2 changes: 1 addition & 1 deletion clang/test/SemaCUDA/vararg.cu
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Expand Up @@ -10,7 +10,7 @@
#include <stdarg.h>
#include "Inputs/cuda.h"

__device__ void foo() {
__global__ void foo() {
va_list list;
va_arg(list, int);
#ifdef EXPECT_VA_ARG_ERR
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