Re: Stack corruption and memory leak problems in c++/Fortran application

Chip Coldwell wrote:
Louis Krupp <lkrupp@xxxxxxxxxxxxxxxxxxxxxxx> writes:

The type of strlen() is 'size_t' instead of 'int'. On a 64-bit
system, strlen(code_menu) could be using eight bytes.

In fact, you are precisely right. On the Win64 architecture, size_t
is 64 bits, while both int and long are 32 bits. I'll bet this is the
cause of the four-byte memory leak.

It may be the cause of the problem, but is not likely a four
byte memory leak.

First, as James notes, the stack should be eight byte aligned
for 64 bit systems. Second, all the common C calling conventions
have the caller pop the stack. (It makes supporting C's
varargs functions much easier.)

Early 8086 calling conventions for Pascal and Fortran used a
callee-pops convention. (It saves one instruction per call,
using a special version of RET.) As C got more popular and
the need to call between languages increased, most converted
to a caller-pops convention.

-- glen

.

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