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by: Gary Kuehn |
last post by:
Is Reserve guaranteed to allocate contiguous memory?
How safe is the following:
vector<char> vbuff;
int sz = numeric_limits<short int>::max();
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by: Joe Joe |
last post by:
I write my C program in Visual C.
After a malloc, I loop for 100 times and amend the memory contents
which I have malloced (but I have never change the ptr or its
address).
After that I free the memory space.
The problem is that memory access error happens OS-dependently when I
free the memory space.
When I run the exe in DOS-prompt of Win2000 and NT memory access error
happens.
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by: BillyO |
last post by:
In the attached code fragment I have a buffer overflow and
a memory access violation. When I run the code .Net fails to
verify the IL because of the buffer overflow and I get an exception
as expected. My question relates to the memory access violation,
specfically, what should happen? My guess is that since the good
ole new operator allocates the memory we get an SEH memory access
violation exception. Given that this can occur in my...
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by: aling |
last post by:
Have following code snip:
struct struc {
int member1;
int member2;
} ;
printf("&((struc*)0)->member2=%p\n", &((struc*)0)->member2);
In VC7.1, the output is 4, the offset of member2 in struc.
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by: Roshni |
last post by:
Hi,
I wanted to know how do function pointers sometime access illegal
memory access ? Could any one give me an example ?
Thanks,
Roshni
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by: Udo A. Steinberg |
last post by:
Hi all,
In a ternary statement such as: x = (cond ? a : b); it is obviously guaranteed
that "x" will be equal to "a" only if the condition "cond" holds. Assuming that
"a" is a memory location, is it also guaranteed that "a" will not be accessed
in memory if the condition does not hold?
Or, in other words, is a compiler allowed to speculatively fetch a and b from
memory and then assign one of them to x based on the condition?
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by: kolmogolov |
last post by:
/*
Hi, I have removed things irrelevant to reproducing the problem.
What's wrong with my code? Thanks in advance for any hint!
1166425362
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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by: Azaz ul haq |
last post by:
Hello!
What is meant by contiguous memory allocation in C++?
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by: Gerhard Fiedler |
last post by:
Hello,
I'm not sure whether this is a problem or not, or how to determine whether
it is one.
Say memory access (read and write) happens in 64-bit chunks, and I'm
looking at 32-bit variables. This would mean that either some other
variable is also written when writing a 32-bit variable (which means that
all access to 32-bit variables is of the read-modify-write type, affecting
some other variable also), or that all 32-bit variables are...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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