Author: Timm Bäder Date: 2023-04-25T08:04:08+02:00 New Revision: 7766648c3aff43408b5d17214fc67c8521952558
URL: https://github.com/llvm/llvm-project/commit/7766648c3aff43408b5d17214fc67c8521952558 DIFF: https://github.com/llvm/llvm-project/commit/7766648c3aff43408b5d17214fc67c8521952558.diff LOG: [clang][Interp] PointerToBoolean casts Just emit e != nullptr for these. Differential Revision: https://reviews.llvm.org/D148981 Added: Modified: clang/lib/AST/Interp/ByteCodeExprGen.cpp clang/test/AST/Interp/literals.cpp Removed: ################################################################################ diff --git a/clang/lib/AST/Interp/ByteCodeExprGen.cpp b/clang/lib/AST/Interp/ByteCodeExprGen.cpp index e28532b288871..536438b347a20 100644 --- a/clang/lib/AST/Interp/ByteCodeExprGen.cpp +++ b/clang/lib/AST/Interp/ByteCodeExprGen.cpp @@ -150,6 +150,17 @@ bool ByteCodeExprGen<Emitter>::VisitCastExpr(const CastExpr *CE) { return this->emitCast(*FromT, *ToT, CE); } + case CK_PointerToBoolean: { + // Just emit p != nullptr for this. + if (!this->visit(SubExpr)) + return false; + + if (!this->emitNullPtr(CE)) + return false; + + return this->emitNEPtr(CE); + } + case CK_ToVoid: return discard(SubExpr); diff --git a/clang/test/AST/Interp/literals.cpp b/clang/test/AST/Interp/literals.cpp index f31a49088dc6c..54f3aefcef2b1 100644 --- a/clang/test/AST/Interp/literals.cpp +++ b/clang/test/AST/Interp/literals.cpp @@ -101,6 +101,19 @@ constexpr int gimme(int k) { } static_assert(gimme(5) == 5, ""); +namespace PointerToBool { + + constexpr void *N = nullptr; + constexpr bool B = N; + static_assert(!B, ""); + static_assert(!N, ""); + + constexpr float F = 1.0; + constexpr const float *FP = &F; + static_assert(FP, ""); + static_assert(!!FP, ""); +} + namespace SizeOf { constexpr int soint = sizeof(int); constexpr int souint = sizeof(unsigned int); _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
