From 28e9494986fe5b016812da397090f2244ea23055 Mon Sep 17 00:00:00 2001 From: Joel Brobecker Date: Thu, 26 Jun 2008 19:08:10 +0000 Subject: [PATCH] * dwarf2read.c (read_attribute_value): Treat size attribute values of 0xffffffff as if the attribute value was zero. --- gdb/ChangeLog | 5 +++++ gdb/dwarf2read.c | 12 ++++++++++++ 2 files changed, 17 insertions(+) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index d5957ec886..e13a47a3cd 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2008-06-26 Joel Brobecker + + * dwarf2read.c (read_attribute_value): Treat size attribute + values of 0xffffffff as if the attribute value was zero. + 2008-06-26 Vladimir Prus * linux-nat.c: Add description of overall logic. diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c index e36177afe0..9723ddd0d7 100644 --- a/gdb/dwarf2read.c +++ b/gdb/dwarf2read.c @@ -6234,6 +6234,18 @@ read_attribute_value (struct attribute *attr, unsigned form, dwarf_form_name (form), bfd_get_filename (abfd)); } + + /* We have seen instances where the compiler tried to emit a byte + size attribute of -1 which ended up being encoded as an unsigned + 0xffffffff. Although 0xffffffff is technically a valid size value, + an object of this size seems pretty unlikely so we can relatively + safely treat these cases as if the size attribute was invalid and + treat them as zero by default. */ + if (attr->name == DW_AT_byte_size + && form == DW_FORM_data4 + && DW_UNSND (attr) >= 0xffffffff) + DW_UNSND (attr) = 0; + return info_ptr; }