GoogleTest:期待不同的类型?

我试着测试一下你的投球,如下所示。

#include <gtest/gtest.h>
int Foo(int a, int b){
    if (a == 0 || b == 0){
        throw "don't do that";
    }
    int c = a % b;
    if (c == 0)
        return b;
    return Foo(b, c);
}
TEST(FooTest, Throw2){
    EXPECT_THROW(Foo(0,0), char*);
}
int main(int argc, char* argv[]){
    testing::InitGoogleTest(&argc,argv);
    return RUN_ALL_TESTS();
}

我希望“Throw2”会成功。但它给出了错误信息:

Expected: Foo(0,0) throws an exception of type char*.
Actual: it throws a different type.

那么这里抛出的是什么类型?