Timm Baeder 360e4abfc8
[clang][bytecode] Diagnose comparisons with literals (#106734)
This requires adding a new opcode for PointerToBoolean casts, since we
otherwise emit too many diagnostics. But that fixes an older problem
when casting weak pointers to bool.
2024-08-31 06:24:36 +02:00

10 lines
690 B
C++

// RUN: %clang_cc1 -std=c++20 -fexperimental-new-constant-interpreter -verify=expected,both %s
// RUN: %clang_cc1 -std=c++20 -verify=ref,both %s
[[gnu::weak]] extern int a;
int ha[(bool)&a]; // both-warning {{variable length arrays in C++ are a Clang extension}} \
// both-error {{variable length array declaration not allowed at file scope}}
int ha2[&a == nullptr]; // both-warning {{variable length arrays in C++ are a Clang extension}} \
// both-note {{comparison against address of weak declaration '&a' can only be performed at runtime}} \
// both-error {{variable length array declaration not allowed at file scope}}