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Questions - malloc

How do C++ compilers handle malloc failures during new operator?

C++ compilers implement new Obj as a wrapper to malloc(sizeof(Obj)). But malloc can fail! What code do C++ compilers insert to handle the failures, and what does it do?
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SRobertJames

c++

compilation

malloc

heap-memory

Votes: 0

Answers: 1

Latest Answer

C++ standard says about the behaviour: [basic.stc.dynamic.allocation] An allocation function that has a non-throwing exception specification ([except.spec]) indicates failure by returning a null poin...
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eerorika

Issue with malloc in Mex file

I have C code which uses FFTW's FFT function. I need to mex the C code, call it and give inputs from matlab and get C performance plots. But ,here the problem is "malloc" fuction used by fft...
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user49626

matlab

malloc

mex

Votes: 0

Answers: 0

Using strcpy on a 2D char array allocated with malloc

I have a problem, and I cannot figure out the solution for it. I have to programm some code to a µC, but I am not familiar with it. I have to create an analysis and show the results of it on the scree...
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MrByte

c

multidimensional-array

malloc

microcontroller

strcpy

Votes: 0

Answers: 2

Latest Answer

This is all odd, you seem to just want: // array of 100 arrays of 10 chars char g_results[100][10]; for (int i = 0; i < 100, i++) { // why snprintf+strcpy? Just write where you want to write. ...
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KamilCuk

C Function to return a String resulting in corrupted top size

I am trying to write a program that calls upon an [external library (?)] (I'm not sure that I'm using the right terminology here) that I am also writing to clean up a provided string. For example, if ...
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ジャプダウン

string

malloc

return-value

c99

memory-corruption

Votes: 0

Answers: 1

Latest Answer

The bug is this line: char * returnVal = malloc(sizeof(input)); The reason it is a bug is that it requests an allocation large enough space to store a pointer, meaning 8 bytes in a 64-bit program. W...
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Tim Boddy

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