堆腐败了吗？ [英] Heap corrupted?
问题描述
我的硬件是HP Pavilion。操作系统 - Windows 10.我有微软的Visual Studio 2017。这是一个社区版。这个当前项目是用C ++编写的Win32控制台应用程序。
MY hardware is HP Pavilion. OS - Windows 10. I have Visual Studio 2017 by Microsoft. It is a Community Edition. This current project is Win32 Console application in C++.
我有这段代码。它是所谓的Librow FFT的一部分。我试图发布一个链接，但论坛不允许我说我的帐户尚未验证。
I have this code. It is a part of so called Librow FFT. I've tried to post a link but the forum does not allow me to do it saying that my account has not been verified yet.
// FFT implementation
private: void Perform (dcomp *const Data, const unsigned int N, const bool Inverse)
{ // Inverse = false
const double pi = Inverse ? 3.14159265358979323846 : -3.14159265358979323846;
// Iteration through dyads, quadruples, octads and so on...
for (unsigned int Step = 1; Step < N; Step <<= 1)
{
// Jump to the next entry of the same transform factor
const unsigned int Jump = Step << 1;
const double delta = pi / double(Step); // Angle increment
// Auxiliary sin(delta / 2)
const double Sine = sin(delta * .5); // <=== UNHANDLED EXCEPTION.
// Multiplier for trigonometric recurrence
const dcomp Multiplier(-2. * Sine * Sine, sin(delta));
// Start value for transform factor, fi = 0
dcomp Factor(1.0,0.0);
// Iteration through groups of different transform factor
for (unsigned int Group = 0; Group < Step; ++Group)
{
// Iteration within group
for (unsigned int Pair = Group; Pair < N; Pair += Jump)
{
const unsigned int Match = Pair + Step; // Match position
dcomp Product = dcomp(Factor * Data[Match]); // Second term of two-point transform
// Transform for fi + pi
// Data[Match] = Data[Pair] - Product; // old statement
Data[Match] = dcomp ((Data[Pair]).Real - Product.Real, (Data[Pair]).Imaginary - Product.Imaginary);
// Transform for fi
Data[Pair] += Product;
}
// Successive transform factor via trigonometric recurrence
Factor = Multiplier * Factor + Factor;
}
}
} // Perform程序编译，我运行了几次，没有任何反应，然后全部我突然得到了这个：
The program compiles and I have run it a few times and nothing happened, then all of a sudden I got this:
Unhandled exception at 0x76F79D11 (ntdll.dll) in VerificationOfConcepts.exe: 0xC0000374: A heap has been corrupted (parameters: 0x76FAD8D0). occurred我右键单击然后"运行到光标"。当我将光标定位在程序的末尾时，会发生上述异常。相反，如果我使用F5，则代码将运行该语句，并在调用例程结束时使用 相同的
消息进行分解：
I do right click and then "run to the cursor." The above exception happens when I position the cursor at the end of the program. If instead I use F5 then the code runs past that statement and breaks down at the end of the calling routine with identical message:
Unhandled exception at 0x76F79D11 (ntdll.dll) in VerificationOfConcepts.exe: 0xC0000374: A heap has been corrupted (parameters: 0x76FAD8D0). occurred
如有必要，我可以发布调用例程。相同的代码在Ubuntu中运行完美，但我现在需要在Windows 10中移植它。那么，为什么我会收到此错误？我检查了档案，似乎这个问题不是唯一的，但是因为各种
的原因发生同样的异常，我找不到类似于我的东西。
I can post the calling routine if necessary. The same code runs flawlessly in Ubuntu but I need to port it now in Windows 10. So, why do I get this error? I checked the archives and it seems this problem is not unique but the same exception happens for various
reasons and I could not find anything similar to mine.
推荐答案
2017年5月20日下午3:32，MyCatAlex写道：
On 5/20/2017 3:32 PM, MyCatAlex wrote:
for（unsigned int Step = 1; Step< N; Step<< = 1）
&NBSP; &NBSP; for（unsigned int Pair = Group; Pair< N; Pair + = Jump）
&NBSP; &NBSP; {
&NBSP; &NBSP; &NBSP; const unsigned int Match = Pair + Step; &NBSP; //&NBSP;&NBSP;比赛位置 &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; dcomp Product = dcomp（Factor * Data [Match]）; //&NBSP;&NBSP;
两点变换的第二项
for (unsigned int Step = 1; Step < N; Step <<= 1)
for (unsigned int Pair = Group; Pair < N; Pair += Jump)
{
const unsigned int Match = Pair + Step; // Match position dcomp Product = dcomp(Factor * Data[Match]); // Second term of two-point transform
数据阵列有多大？它至少有2 * N-1个元素吗？匹配可以大到2 * N-2。
How large is Data array? Does it have at least 2*N-1 elements? Match can be as large as 2*N-2.
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