kaitai_struct | Kaitai Struct : declarative language | Parser library

by kaitai-io Shell Version: 0.10 License: No License

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kandi X-RAY | kaitai_struct Summary

kaitai_struct is a Shell library typically used in Utilities, Parser applications. kaitai_struct has no bugs, it has no vulnerabilities and it has medium support. You can download it from GitHub.

Kaitai Struct is a declarative language used for describing various binary data structures laid out in files or in memory: i.e. binary file formats, network stream packet formats, etc. The main idea is that a particular format is described in Kaitai Struct language only once and then can be compiled with a ksc into source files in one of the supported programming languages. These modules will include a generated code for a parser that can read described data structure from a file / stream and give access to it in a nice, easy-to-comprehend API.

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kaitai_struct has a medium active ecosystem.

It has 3480 star(s) with 182 fork(s). There are 95 watchers for this library.

It had no major release in the last 6 months.

There are 472 open issues and 531 have been closed. On average issues are closed in 244 days. There are 4 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of kaitai_struct is 0.10

Quality

kaitai_struct has 0 bugs and 0 code smells.

Security

kaitai_struct has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

kaitai_struct code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

kaitai_struct does not have a standard license declared.

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Without a license, all rights are reserved, and you cannot use the library in your applications.

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kaitai_struct releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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Community Discussions

Trending Discussions on kaitai_struct

Why does CLANG 3.5 on Linux cleans a "std::string" up twice when calling DTOR when throwing in CTOR?

QUESTION

Why does CLANG 3.5 on Linux cleans a "std::string" up twice when calling DTOR when throwing in CTOR?

Asked 2020-Aug-04 at 13:55

There's a project focusing on using C++ 98 without additional dependencies, but it needs to maintain dynamically allocated memory. Smart pointers are not available, so code to manually clean things up has been added. The approach is to explicitly set variables to NULL in the CTOR, read some data during which memory might be allocated dynamically, catch any occurring exception and clean memory up as necessary by manually calling the DTOR. That needs to implement freeing memory anyway in case everything succeeded and has simply been enhanced by safeguards to check if memory has been allocated at all or not.

The following is the most relevant available code for this question:

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ANSWER

Answered 2020-Aug-02 at 17:36

Once the destructor is called, the object ceases to be (leaving you with uninitialized memory). This means that destructors may omit "finalizing" memory writes, such as setting a pointer to zero (the object ceases to be, so its value cannot ever be read). It also means that basically any further operation on that object is UB.

People assume some leeway on destroying *this, if the this pointer is not used in any way anymore. This is not the case in your example, as the destructor is called twice.

I am aware of exactly one case in which calling the destructor manually is correct and one where it is mostly-correct: When the object was created with placement new (in which case there will be no operation that automatically calls the destructor). The mostly-correct case is when destroying the object is immediately followed by re-initializing the object via a call to placement-new at the very same location.

As to your second question: Why do you want to explicitly call the destructor anyway? As far as I can see, your code should work just fine without all the contortions:

Source https://stackoverflow.com/questions/63215793

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