"non-void function does not return a value" 错误详解 1. 错误解释 “non-void function does not return a value”是一个编译时错误,意味着一个非void类型的函数在其执行路径上没有返回任何值。在大多数编程语言中,如果一个函数被声明为返回特定类型(非void),那么它必须在所有可能的执行路径上返回一个该类...
用clang++编译同样类似警告也通过了,但执行出现异常指令。 gaojie@root-host:~$ clang++bool.cppbool.cpp:12:1: warning: non-voidfunction does notreturna value [-Wreturn-type] };^1warning generated. gaojie@root-host:~$ ./a.outyes 非法指令 (核心已转储) 本着好奇的心理,就想知其原因为啥会有不...
gen::functionDefinitionEnd(); if (!gen::functionDefinitionEnd()) { error::out() << fnName.loc << ": warning: non-void function does not " << "return a value in all control paths\n"; } } /*21 changes: 19 additions & 2 deletions 21 gen/function.cpp Original file line number...
#include <stdio.h> int hello() { return 233; } int print_data(int* data, int len) { for (int i = 0; i < len; i++) { printf("%d ", data[i]); } printf("\n"); // here the return statement is missing, the compiler will generate an UB //hello(); } void example1()...
The following sample code long offset(long v) { if (!v) return 0; if (v > 0) return 1; if (v < 0) return -1; } produces warning: non-void function does not return a value in all control paths [-Wreturn-type] So does long offset(long v) {...
return g_personal_name; #endif } int main() { int ret = 0; ret = get_company_name(); printf("ret value is:%d\r\n",ret); return 0; } 运行结果: g_personal_name value is:2 ret value is:2 从上面的程序来看:当没有走ifdef流程的时候,走的是另一个返回值的流程。如果没有写#else的...
warning: control reaches end of non-void function 它的意思是：控制到达非void函数的结尾。就是说你的一些本应带有返回值的函数到达结尾后可能并没有返回任何值。这时候，最好检查一下是否每个控制流都会有返回值。你没有在else语句内return ...
A function that does not return a value is called a non-value returning function (or a void function). Void functions don’t need a return statement A void function will automatically return to the caller at the end of the function. No return statement is required. A return statement (wit...
"warning: control may reach end of non-void function [-Wreturn-type] runtime error: execution reached the end of a value-returning function without returning a value" At the two initial if's. However, when I compile on my IDE, there is no such warning. Any clues about ...
Building ngs 0.2.16 I see this warning: malloc.c:71:1: warning: non-void function does not return a value in all control paths [-Wreturn-type] } ^ 1 warning generated.