默认情况下模板内的基本类型(int float ...)是不会自动初始化为0的(不像一般函数/类中),要想实现其自动初始化可以在模板函数中T x = T(); 在类中可以在构造函数列表中: x(), y()... #include<iostream>usingnamespacestd;template<typenameT>voidf(constT&){//T x = T(); //对比可知,此时输出...
初始化系列之零初始化(zero initialization) 零初始化 把一个对象的初始化值设置为0 说明 零初始化会在下面的情况下执行: 对于任何static或者thread-local变量,没有使用const,在任何初始化之前,会进行0初始化,也就是static和thread-local修饰的变量会0初始化 如果不是类,作为数值初始化序列的一部分;如果是类,并且...
The effects of zero-initialization are: IfTis ascalar type, the object is initialized to the value obtained byexplicitly convertingthe integer literal0(zero) toT. IfTis a non-union class type: allpadding bitsare initialized to zero bits, ...
初始化系列之零初始化（zeroinitialization）零初始化 把⼀个对象的初始化值设置为0 说明 零初始化会在下⾯的情况下执⾏：1. 对于任何static或者thread-local变量，没有使⽤const，在任何初始化之前，会进⾏0初始化，也就是static和thread-local修饰的变量会0 初始化 2. 如果不是类，作为数值初始化序列...
zero initialization 将对象的初始值设置为零。 句法 static T object ; (1) T () ; T t = {} ; T {} ; (2) (since C++11) char array n = ""; (3) 解释 在下列情况下执行零初始化: 1%29用于每个具有静态或线程本地的命名变量存储时间不受常数初始化%28自C++14%29以来,在任何...
msvc zero-initialization Jan 27, 2021 at 6:09am Ganado(6814) https://godbolt.org/z/xqad3W https://godbolt.org/z/31Esb4 1 2 3 4 5 6 7 8 9 10 11 #include <cstring>charfoo() {char* filename =newchar[32]; ::memset(filename, 0, 32);charch = filename[15];delete[] ...
Zero Initialization for global variables in C++Kevin Schuster Expert 1210 points Hello, since I found out how to initialize the .bss Section with 0 (http://e2e.ti.com/support/development_tools/compiler/f/343/p/353583/1240668.aspx#1240668) my new question is, ho...
Does not generate initialization code for root-level inports and outports set to zero. During startup, standards-compliant C and C++ compilers initialize global data to zero, eliminating the need to include zero initialization code for this data in the generated code. Standards-compliant compilers...
int i = i; // #1 static storage duration [basic.life] p1 says A variable is said to have vacuous initialization if it is default-initialized and, if it is of class type or a (possibly multi-dimensional) array thereof, that class type has...
解决办法如下 this can be done by adding code to disable the watchdog within the routine system_pre_init() in file pre_init.c. This routine is called prior to the auto init hence the watchdog will be disabled prior to the C initialization process. This file can be found in the ...