[Mono-list] Managed equivalent of memset?

Robert Jordan robertj at gmx.net
Tue Feb 20 08:55:20 EST 2007

Frederik Carlier wrote:
> Hi,
> As a quick introduction, I'm trying to convert a C++.NET wrapper around
> HTML Tidy to C#, because of the lack of a C++.NET compiler for Linux.
> I'm by no means an expert in unmanaged code, but things are going well.
> I am, however, hitting a problem with a struct. The C++ code that
> initializes the struct reads as follows:
> [C++]
> m_errbuf = new TidyBuffer;
> memset(m_errbuf,0,sizeof(TidyBuffer));
> tidySetErrorBuffer(m_tdoc,m_errbuf);
> Re-creating the struct and calling tidySetErrorBuffer is easy enough,
> but what is the managed equivalent of memset? If I just 'omit' the
> memset line, I get the following failed assertion:

Zeroing memory is usually not necessary because structs allocated
by C# are initialized with zero.

> mono: src/buffio.c:184: tidyBufPutByte: Assertion `buf != ((void *)0)'
> failed.

Assertion `buf != ((void *)0)' means that the unmanaged library
is expecting something != 0 but it got a 0, so your problem is
most likely not related to memset. Please post some code.


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