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Mingw build and test instructions: TODO
 
Mingw build and test instructions: TODO
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== GDC LTO ==
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* https://gcc.gnu.org/onlinedocs/gccint/LTO-Overview.html
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* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59893
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Use readelf with "--lto-syms" option to inspect the static Phobos library. Compile libraries with "-flto -ffat-lto-objects".
  
 
== Arithmetic overflows ==
 
== Arithmetic overflows ==

Latest revision as of 13:40, 14 December 2023

D language for programming competitions

Not everything is perfect:

GDC tips and tricks

GDC 11+ requires "-flto" or "-fno-weak-templates" option to avoid a major performance regression: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102765

Shared library linking workaround to run phobos unit tests: https://bugzilla.gdcproject.org/show_bug.cgi?id=199

Demangle symbols: https://dlang.org/phobos/std_demangle.html

Mingw build and test instructions: TODO

GDC LTO

Use readelf with "--lto-syms" option to inspect the static Phobos library. Compile libraries with "-flto -ffat-lto-objects".

Arithmetic overflows

TODO: create a new DIP? https://forum.dlang.org/post/rclilxjpnjvexggncfhd@forum.dlang.org

TODO: Atomic operations and arithmetic overflows?

TODO: Unsigned overflows?

GDC supports "-ftrapv" easter egg option for trapping signed overflows.

Relevant links:

GCC history of -fno-strict-aliasing and -fwrapv:

Associative arrays and hash collisions

https://forum.dlang.org/post/navsnrjweslsqeaawsev@forum.dlang.org

A hacked solution on codeforces (integers): https://codeforces.com/contest/1676/submission/156707849 A hacked solution on codeforces (strings): https://codeforces.com/contest/1703/submission/163949653

Relevant links:

Long term support version of D language

The 2.076 frontend from GDC 9/10/11 can be essentially treated as a D language "edition 2017". This old frontend can be also added to GDC 12 by essentially reverting the frontend upgrade commits, but preferably both frontends should be supported in a single compiler release and selected via '-std=' option.

Victims of compatibility breaking changes:

D1 support story: