While the bug is persisting that LTO streaming picks up a CONST_DECL
from an attribute argument on a VAR_DECL which with -fdebug-type-section
refers to a DIE in a type unit we can handle this gracefully, at least
with -fno-checking. Do so. The C++ frontend nevetheless should resolve
the CONST_DECL attribute argument to a constant.
PR debug/107058
* dwarf2out.cc (dwarf2out_die_ref_for_decl): Gracefully
handle unexpected but bogus DIE contexts when not checking
enabled.
* c-c++-common/pr107058.c: New testcase.
die = die->die_parent;
/* For the containing CU DIE we compute a die_symbol in
compute_comp_unit_symbol. */
- gcc_assert (die->die_tag == DW_TAG_compile_unit
- && die->die_id.die_symbol != NULL);
- *sym = die->die_id.die_symbol;
- return true;
+ if (die->die_tag == DW_TAG_compile_unit)
+ {
+ gcc_assert (die->die_id.die_symbol != NULL);
+ *sym = die->die_id.die_symbol;
+ return true;
+ }
+ /* While we can gracefully handle running into say a type unit
+ we don't really want and consider this a bug. */
+ if (flag_checking)
+ gcc_unreachable ();
+ return false;
}
/* Add a reference of kind ATTR_KIND to a DIE at SYMBOL + OFFSET to DIE. */
--- /dev/null
+/* { dg-do compile } */
+/* { dg-require-effective-target lto } */
+/* { dg-options "-g -fdebug-types-section -flto -fno-checking" } */
+
+/* We should handle the C++ FE issue gracefully with -fno-checking. */
+
+#include "pr50459.c"