memory-leaks

问题 I wish to determine if the following program (an implementation of finding the maximum sub-array) leaks memory. Is there a general way to determine this? Such as using some feature of a debugger? What are general strategies? struct Interval { int max_left; int max_right; int sum; }; struct Interval * max_crossing_subarray(int A[], int low, int mid, int high) { struct Interval * crossing = malloc(sizeof(struct Interval)); int left_sum = INT_MIN; int sum = 0; for(int i = mid; i >= low; --i) {

问题 I wish to determine if the following program (an implementation of finding the maximum sub-array) leaks memory. Is there a general way to determine this? Such as using some feature of a debugger? What are general strategies? struct Interval { int max_left; int max_right; int sum; }; struct Interval * max_crossing_subarray(int A[], int low, int mid, int high) { struct Interval * crossing = malloc(sizeof(struct Interval)); int left_sum = INT_MIN; int sum = 0; for(int i = mid; i >= low; --i) {

问题 I am using gfortran 8.4 in Ubuntu with a deferred-length character variable as in the following example: PROGRAM test IMPLICIT NONE CHARACTER(LEN=:),ALLOCATABLE :: str str = '10' END PROGRAM test If I compile it using: gfortran-8 test.f90 -o test -O0 When running the program using Valgrind I get a memory leak: ==29119== HEAP SUMMARY: ==29119== in use at exit: 2 bytes in 1 blocks ==29119== total heap usage: 22 allocs, 21 frees, 13,522 bytes allocated ==29119== ==29119== LEAK SUMMARY: ==29119==

问题 In my android app I have some Database transaction using SQLite but I am getting SQLiteConnection object leakage despite trying many ways to prevent the leak. I have almost tried each and every thing in the internet like closing the db, closing the cursor, or ending the transaction. Below is the warning in android studio. A SQLiteConnection object for database '/data/user/0/com.example.myapp/databases/myapp.dbnotes.db' was leaked! Please fix your application to end transactions in progress

问题 In my android app I have some Database transaction using SQLite but I am getting SQLiteConnection object leakage despite trying many ways to prevent the leak. I have almost tried each and every thing in the internet like closing the db, closing the cursor, or ending the transaction. Below is the warning in android studio. A SQLiteConnection object for database '/data/user/0/com.example.myapp/databases/myapp.dbnotes.db' was leaked! Please fix your application to end transactions in progress

问题 I'm trying to read and write asynchronously to disk in C++ (using the posix aio library in Ubuntu 10.04), following the directions outlined here: aio tutorial. I can asynchronously read and write, but I'm afraid there is a small memory leak of some sort. My valgrind output says that there are 288 possibly lost bytes and 3,648 still reachable bytes. These numbers seem to be independent of the amount of bytes actually read from file. I cannot find where or how to eliminate this leak - and it

问题 I'm trying to read and write asynchronously to disk in C++ (using the posix aio library in Ubuntu 10.04), following the directions outlined here: aio tutorial. I can asynchronously read and write, but I'm afraid there is a small memory leak of some sort. My valgrind output says that there are 288 possibly lost bytes and 3,648 still reachable bytes. These numbers seem to be independent of the amount of bytes actually read from file. I cannot find where or how to eliminate this leak - and it

问题 I'm trying to read and write asynchronously to disk in C++ (using the posix aio library in Ubuntu 10.04), following the directions outlined here: aio tutorial. I can asynchronously read and write, but I'm afraid there is a small memory leak of some sort. My valgrind output says that there are 288 possibly lost bytes and 3,648 still reachable bytes. These numbers seem to be independent of the amount of bytes actually read from file. I cannot find where or how to eliminate this leak - and it

问题 I want to check my program for memory leaks and found this Microsoft article. I thoroughly followed the article and added #define CRTDBG_MAP_ALLOC #include <stdlib.h> #include <crtdbg.h> and _CrtDumpMemoryLeaks(); when the program exits. It properly dumps all the memory leak info in my output window, but here's the problem: It doesn't print the file name and line number where the memory leaks are! It says in the article that with #define _CRTDBG_MAP_ALLOC it prints the file name and line

问题 I want to check my program for memory leaks and found this Microsoft article. I thoroughly followed the article and added #define CRTDBG_MAP_ALLOC #include <stdlib.h> #include <crtdbg.h> and _CrtDumpMemoryLeaks(); when the program exits. It properly dumps all the memory leak info in my output window, but here's the problem: It doesn't print the file name and line number where the memory leaks are! It says in the article that with #define _CRTDBG_MAP_ALLOC it prints the file name and line