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Assorted Rants Tagged ‘MSVC’, page 1:

Quick Update on C++ Compiler Bug Hunt (overall, 15 bugs reported, 8 already fixed)

posted May 9, 2018 by "No Bugs" Hare

Some time ago, I wrote a post about kscope – mini-project on finding and reporting bugs in modern C++ compilers. The point was that there is a way to use C++ facilities to make C++ code self-mutating (more strictly – pseudo-randomized using externally supplied ITHARE_KSCOPE_SEED macro), which allows finding certain classes of bugs during randomized […]

Parallel STL for Newbies: Reduce and Independent Modifications

posted April 26, 2018 by "No Bugs" Hare

Quote:	“with std::reduce() such code, while it compiles at least under MSVC, MAY occasionally provide wrong results”
Another Quote:	“if you happen to need something beyond that – take a deep breath and allocate at least several months to understand how does parallelism really work under the hood.”
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Parallel Coding: From 90x Performance Loss To 2x Improvement

posted April 4, 2018 by "No Bugs" Hare

Quote:	“as long as serial code provides good-enough response times from end-user perspective – DON’T PARALLELIZE”
Another Quote:	“out of all the premature optimizations, premature parallelization is the most premature one”
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Using Parallel <algorithm> Without a Clue: 90x Performance Loss Instead of 8x Gain

posted March 27, 2018 by "No Bugs" Hare

Abstract:	“I made an experiment which demonstrates Big Fat Dangers(tm) of implying that parallelization can be made as simple as just adding a policy parameter to your std:: call.”
Quote:	“it is still necessary to understand what we’re doing”
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How to Report C++ Compiler Bugs

posted February 27, 2018 by "No Bugs" Hare

Quote:	“the bug MUST be reproducible”
Another Quote:	“did you know that in a case of a signed integer overflow, compiler is allowed to generate code which formats your hard drive?”
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C++17 Compiler Bug Hunt: Very First Results (12 bugs reported, 3 already fixed)

posted February 20, 2018 by "No Bugs" Hare

Quote:	“Hey, if all I have is lemons – I have no choice but to make lemonade out of them!”
Another Quote:	“if reproducible serious bugs are ignored for many months, it indicates one of three possibilities”
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C++ Performance: Common Wisdoms and Common “Wisdoms”

posted May 30, 2016 by "No Bugs" Hare

Quote:	“over(ab)using C++ features is a different story, we’ll discuss these features below on case-by-case basis”
Another Quote:	“Compiler will use all its Next-to-Divine Wisdom to show you that it is smarter than you are, and to ignore most of those inline specifications you carefully wrote.”
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