CUDA：NVCC给出控制表达式是断言的常量警告 [英] CUDA: NVCC gives controlling expression is constant warning on assert

问题描述

我得到警告控制表达式是常量在assert语句如下：

I get the warning controlling expression is constant on assert statement like this:

assert(... && "error message");

为什么这个警告会出现？如何禁止此警告？

Why this warning on this assert? How can I suppress this warning?

NVCC是NVIDIA cuda编译器，我认为它是基于LLVM的。

NVCC is the NVIDIA cuda compiler, I think it is based on LLVM. Why does it give this warning, when the same compiles fine with GCC or Visual C++ compilers?

推荐答案

一个可移植的替代方案在宏中）将是这样的：

A portable alternative (possibly wrapped in a macro) would be something like:

 {
     const bool error_message = true;
     assert([...] && error_message);
 }

清除我的意思：

#define myAssert(msg, exp) { const bool msg(true); assert(msg && (exp)); }
// usage:
myAssert(ouch, a && b);

...例如：

声明ouch&&（a& b）失败[...]

assertion "ouch && (a && b)" failed [...]

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