https://issues.dlang.org/show_bug.cgi?id=20510
Issue ID: 20510 Summary: Make backtrace code read the dSYM data Product: D Version: D2 Hardware: All OS: Mac OS X Status: NEW Severity: enhancement Priority: P1 Component: druntime Assignee: nob...@puremagic.com Reporter: pro.mathias.l...@gmail.com Currently, on Mac OSX, the linker will strip debug informations to speed up linkage and reduce binary size. Links to the object files are created, and can be read by the debugger. It's also possible to create a .dSYM bundle to distribute alongside the binary. This leads to the unfortunate consequence that the backtrace code in Druntime, which relies on the `.debug_lines` DWARF section, will not print file/line information in a stack trace, even when compiled with `-g`. There are workarounds for this: - DMD preserves the `__debug_line` by marking it as a regular section: https://github.com/dlang/dmd/commit/2bf7d0db29416eacbb01a91e6502140e354ee0ef - LDC does the same, but had to patch LLVM for that: https://github.com/ldc-developers/llvm-project/commit/110deda1bc1cf195983fea8c1107886057987955 However, this is a hack and has drawbacks. DMD emits fairly poor debug informations but will show file/line on Exceptions stack traces on OSX, while LDC emits proper information but has to be linked against a patched LLVM. The requirement for a patched LLVM might throw off packagers, e.g. the Homebrew package of LDC does *not* link against that custom LLVM, hence the workaround does not work: https://github.com/ldc-developers/ldc/issues/3280 What would be best, long term, would be for Druntime to read the same `.dSym` data. --