https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102255
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|i[34567]86-*-cygwin*, |i[34567]86-*-cygwin*,
|x86_64-*-cygwin*, |x86_64-*-cygwin*,
|i[34567]86-*-mingw*, |i[34567]86-*-mingw*,
|x86_64-*-mingw* |x86_64-*-mingw*,
| |i?86-*-darwin*
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
i?86-*-darwin* also uses STABS for pre-darwin9 32bit compiles via i386/darwin.h
/* Darwin on x86_64 uses dwarf-2 by default. Pre-darwin9 32-bit
compiles default to stabs+. darwin9+ defaults to dwarf-2. */
#ifndef DARWIN_PREFER_DWARF
#undef PREFERRED_DEBUGGING_TYPE
#ifdef HAVE_AS_STABS_DIRECTIVE
#define PREFERRED_DEBUGGING_TYPE (TARGET_64BIT ? DWARF2_DEBUG : DBX_DEBUG)
#else
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
#endif
#endif
but it looks like DARWIN_PREFER_DWARF is always set.
