C++ program dies with std::bad_alloc, BUT valgrind reports no memory leaks

Question

My program fails with \'std::bad_alloc\' error message. The program is scalable, so I\'ve tested on a smaller version with valgrind and there are no memory leaks.

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Answer 1

Run the program under debugger so that it stops once that exception is thrown and you can observe the call stack.

Three most probable problems are:

• heap fragmentation
• too many objects created on heap (but still pointed to from the program)
• a request for an unreasonably large block of memory