92 lines
1.4 KiB
C++
92 lines
1.4 KiB
C++
#include "precompiled.h"
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#ifdef CHECKED
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const int PATTERN = 0xAA;
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void *mynew(size_t s)
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{
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uint8_t *ptr = (uint8_t *)malloc(s + 8);
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if(ptr)
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{
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memset(ptr, PATTERN, s + 8);
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return ptr + 4;
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} else
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{
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abort();
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}
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return NULL;
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}
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void *operator new(size_t s) //throw(std::bad_alloc)
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{
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return mynew(s);
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}
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void *operator new[](std::size_t s) //throw(std::bad_alloc)
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{
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return mynew(s);
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}
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void *operator new(size_t s, const std::nothrow_t &) throw()
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{
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return mynew(s);
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}
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void *operator new[](size_t s, const std::nothrow_t &) throw()
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{
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return mynew(s);
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}
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void mydelete(void *p)
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{
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if(p)
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{
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uint8_t *realp = (uint8_t *)p - 4;
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#ifdef VMP_GNU
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size_t s = malloc_usable_size(realp);
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#else
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size_t s = _msize(realp);
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#endif
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uint8_t *endp = realp + s;
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for(int i = 0; i < 4; i++)
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{
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bool needAbort = false;
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if(realp[i] != PATTERN)
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{
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std::cout << "Heap underflow at " << p << std::endl;
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needAbort = true;
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}
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if(*--endp != PATTERN)
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{
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std::cout << "Heap overflow at " << p << std::endl;
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needAbort = true;
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}
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if(needAbort)
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{
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abort();
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}
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}
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memset(realp, 0x55, s);
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free(realp);
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}
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}
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void operator delete(void *p) throw()
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{
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mydelete(p);
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}
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void operator delete[](void *p) throw()
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{
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mydelete(p);
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}
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void operator delete[](void *p, const std::nothrow_t &) throw()
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{
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mydelete(p);
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}
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void operator delete(void *p, const std::nothrow_t &) throw()
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{
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mydelete(p);
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}
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#endif |