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| author | Iain Buclaw <ibuclaw@gdcproject.org> | 2020-12-16 00:17:40 +0100 |
|---|---|---|
| committer | Iain Buclaw <ibuclaw@gdcproject.org> | 2020-12-19 20:39:04 +0100 |
| commit | e9e4ddfc5abbf9ee5e657d626264cef89f10b4c3 (patch) | |
| tree | 27db000303acbbfe2ddbd905428e3a5485a67081 /gcc/dwarf2out.c | |
| parent | 9032d2b2414ed22e53a9980a51b835d3caf83c48 (diff) | |
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d: Fix ICE in in force_decl_die, at dwarf2out.c with -gdwarf-2 -gstrict-dwarf [PR98067]
Manifest constants in D are represented as CONST_DECLs, which can be
imported from one module to another. However, when compiling on strict
dwarf2 targets such as *-*-darwin10, importing CONST_DECLs cannot be
represented in debug as D did not exist as an AT_language until dwarf3,
and the only available fallback being DW_LANG_C. As CONST_DECLs are
treated as enumerators in C, and not outputted individually in
gen_decl_die, this causes an internal error in force_decl_die to occur.
To handle this, similar to other places in dwarf2out, if a CONST_DECL is
seen in dwarf2out_imported_module_or_decl_1, then we simply return early
if the language is not one of Ada, D, or Fortran.
gcc/ChangeLog:
PR d/98067
* dwarf2out.c (dwarf2out_imported_module_or_decl_1): Handle
CONST_DECL only if is_fortran, is_ada, or is_dlang.
gcc/testsuite/ChangeLog:
PR d/98067
* gdc.dg/debug/debug.exp: New test.
* gdc.dg/debug/dwarf2/dwarf2.exp: New test.
* gdc.dg/debug/dwarf2/imports/pr98067.d: New test.
* gdc.dg/debug/dwarf2/langdw2.d: New test.
* gdc.dg/debug/dwarf2/langdw3.d: New test.
* gdc.dg/debug/dwarf2/pr98067.d: New test.
* gdc.dg/debug/trivial.d: New test.
Diffstat (limited to 'gcc/dwarf2out.c')
| -rw-r--r-- | gcc/dwarf2out.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index 0baa056..027f327 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -26705,6 +26705,13 @@ dwarf2out_imported_module_or_decl_1 (tree decl, gen_type_die_for_member (type, decl, get_context_die (TYPE_CONTEXT (type))); } + if (TREE_CODE (decl) == CONST_DECL) + { + /* Individual enumerators of an enum type do not get output here + (see gen_decl_die), so we cannot call force_decl_die. */ + if (!is_fortran () && !is_ada () && !is_dlang ()) + return; + } if (TREE_CODE (decl) == NAMELIST_DECL) at_import_die = gen_namelist_decl (DECL_NAME (decl), get_context_die (DECL_CONTEXT (decl)), |