spot7.org logo
Home PHP C# C++ Android Java Javascript Python IOS SQL HTML Categories

C - segfault when trying to use strdup


strdup(token) segfaulting is most likely explained by token being NULL. (You don't need to strdup here anyway). Change that piece of code to:

if ( token == NULL )
{
    fprintf(stderr, "Invalid data in file.
");
    exit(EXIT_FAILURE);  // or some other error
handling
}

tempID = atoi(token);

However a greater problem with the surrounding code is that you are trying to use strtok twice at once. It maintains internal state and you can only have one strtok "in progress" at any one time. The second one cancels the first one. You'll have to redesign that section of code.


Also, while(!feof(fp_rp)) is wrong, and your yelp mallocs the wrong number of bytes (although in the code posted you never actually try to store anything in that storage, so it would not cause an error just yet).


Categories : C

Related to : C - segfault when trying to use strdup
capture segfault with lldb on OS X
Try running your program separately and attaching to it. If your binary is called a.out, you would use the process attach --waitfor command like this: term1$ lldb (lldb) pr a -w a.out term2$ a.out lldb will poll the process table repeatedly until a.out starts up - when it sees the process, it will attach to it. In the lldb terminal, c (continue) the process execution. Alternatively, you m

Categories : Osx
Segfault converting pointers with reinterpret_cast
The reinterpret_cast itself can't segfault, since it only changes the type of the expression for the compiler. It gets compiled away and doesn't do anything at runtime (unlike for example dynamic_cast). What is failing is your use of the pointer later in the program. Unlike static_cast, but like const_cast, the reinterpret_cast expression does not compile to any CPU instructions quote from

Categories : C++
OpenMP generates segfault in a code that uses Armadillo
I think I figured it out, although I don't know why this fixes the problem. Here is the modified code: #include<iostream> #include<ctime> #include<armadillo> #include <fstream> #include<omp.h> int main() { std::ofstream File; File.open("./RESULTS.dat"); arma::mat M; arma::mat RESULTS; arma::mat Eigenvecs; arma::vec Eigenval; int i

Categories : C++
Recently Add
Rewrite of IDA decompiled function
Computing the average of grades in C
passing structures to functions
Use semaphores for handling sockets in C
How to search for a string pattern inside html, coding in C?
sprintf invalid format '%d'
Why can't this c program run correctly?
Low Pass filter in C
Child process does not print anything
C: datatypes. sqrt function working with int why?
How to implement Serial Port Profile Link Command used in ConnectBlue Bluetooth Module?
Rerunning cancelled pthread
How to print out a string that is pointed to by a char pointer?
Can unverified scanf call cause an undefined behavior?
nested structures in C
Portable Makevars for R package using C, GSL and OpenMP with help of Rcpp
program doesn't run(getting RUN FINISHED Segmentation fault core dumped)
Finding the sign of a Lua number, from C
Width of symbols created by gcc's objectcopy
Strange behavior when using free in c program
Can't open image C
Strange C code - dynamic arrays?
C program printing weird characters
Fault in decimal to binary in c
How to detect broken pipe on input?
How can I ivestigate use of the register keyword in C?
File scaning with fscanf
why gcc generates "leal -8240(%ebp), %eax; cmpl $1, %eax; ja XXX" instead of jmp instruction?
Wierd Problems With My Own Custom Written Word Search Algorithm
Trouble with making a shell in C
© Copyright 2017 spot7.org Publishing Limited. All rights reserved.