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Man against Compiler

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Man against Compiler
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94
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CC Attribution 4.0 International:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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Abstract
After having spent about a decade of aggressively optimising C/C++ code, the speaker would like to share his view on modern compilers, why C isn't a portable assembler anymore and why some people have a rather radical belief that optimising compilers are dead. After having spent about a decade of aggressively optimising C/C++ code, the speaker would like to share his view on modern compilers, why C isn't a portable assembler anymore and why some people have a rather radical belief that optimising compilers are dead. The speaker will demonstrate several simple C programs that get compiled to native code with surprising results including now famous "rm -rf /" executed from an unreachable function. These and other similar programs cause a friction in programming and infosec communities. While people are mostly concerned with unpredictable artefacts of undefined behaviour in C/C++ languages, there are also performance considerations. Finally, the speaker will briefly look at other languages and check if they do any better.