ldc-developers/ldc v1.19.0-beta1

LDC 1.19.0-beta1

on GitHub

Big news

• Frontend, druntime and Phobos are at version 2.089.0. (#3192, #3210, #3215)
• Breaking extern(D) ABI change for Posix x86[_64]: non-POD arguments are now passed by ref under the hood, just like they already were for extern(C++). Some superfluous implicit blits have been optimized away as well, for all targets. (#3204)
• Posix: Defaults to cc now for linking, not gcc (or clang for FreeBSD 10+) - if the CC environment variable isn't set. Override with -gcc=<gcc|clang>. (#3202)
• Codegen elision of dead branches for if statements with constant condition (not depending on enabled LLVM optimizations). (#3134)

Platform support

• Supports LLVM 3.9 - 9.0.

Bug fixes

• Misc. CMake issues with some LLVM 9 configurations. (#3079, #3198)
• Equality/identity comparisons of vectors with length ≥ 32. (#3208, #3209)
• ldc.gccbuiltins_* druntime modules now available to non-installed compiler too. (#3194, #3201)

Known issues

• Buggy older ld.bfd linker versions may wrongly strip out required symbols, e.g., ModuleInfos (so that e.g. no module ctors/dtors are run). LDC defaults to ld.gold on Linux.
• LDC does not zero the padding area of a real variable. This may lead to wrong results if the padding area is also considered. See #770. Does not apply to real members inside structs etc.