diff options
Diffstat (limited to 'gdb/dwarf2read.c')
| -rw-r--r-- | gdb/dwarf2read.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c index 00bba47..52208d6 100644 --- a/gdb/dwarf2read.c +++ b/gdb/dwarf2read.c @@ -14522,6 +14522,13 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) } } + /* Normally, the DWARF producers are expected to use a signed + constant form (Eg. DW_FORM_sdata) to express negative bounds. + But this is unfortunately not always the case, as witnessed + with GCC, for instance, where the ambiguous DW_FORM_dataN form + is used instead. To work around that ambiguity, we treat + the bounds as signed, and thus sign-extend their values, when + the base type is signed. */ negative_mask = (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) |