https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98728
Mark Wielaard <mark at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org
--- Comment #1 from Mark Wielaard <mark at gcc dot gnu.org> ---
Hi,
Maybe this bug should be split in two (or three) for each specific FAIL?
(In reply to Rainer Orth from comment #0)
> With the switch to DWARF-5, two debug tests have started to FAIL:
>
> +FAIL: g++.dg/debug/dwarf2/constexpr-var-1.C scan-assembler-times
> DW_AT_const_expr 2
>
> 32 and 64-bit Solaris/SPARC and x86, Linux/x86_64
This is https://gcc.gnu.org/pipermail/gcc-patches/2020-August/552474.html
There is a suggested fix, but no consensus on whether that is a good one:
https://gcc.gnu.org/pipermail/gcc-patches/2020-September/553102.html
> +FAIL: gcc.dg/debug/dwarf2/dwarf-float.c scan-assembler 0x10.*DW_AT_byte_size
>
> 32-bit Solaris/x86 and Linux/x86_64
So this fails in 32bit mode, but not in 64bit mode.
In 64bit mode gcc generates:
.uleb128 0x2 # (DIE (0x7d) DW_TAG_base_type)
.byte 0x10 # DW_AT_byte_size
# DW_AT_encoding (0x4)
.long .LASF4 # DW_AT_name: "long double"
But in 32bit mode it generates:
.uleb128 0x2 # (DIE (0x6d) DW_TAG_base_type)
.byte 0xc # DW_AT_byte_size
# DW_AT_encoding (0x4)
.long .LASF4 # DW_AT_name: "long double"
> Besides, there were many changes to guality tests on Linux/x86_64, both tests
> previously XPASSing now XFAIL again, as well as several new FAILs.
The guality tests are a little fragile, they also depend on the gdb version
installed.
