Assuming the following variable definition:
long double inp = 2.0;
On platforms where "long double" is a double precision IEEE flaoting
point, GDB currently behaves as follow:
(gdb) set variable inp = 1.6e+308l
(gdb) p inp
$2 = inf <<<<---- !!!!
Instead, the value of "inp" should be printed as:
(gdb) p inp
$1 = 1.6e+308
The problem is due to a small error in the comparison of the exponent
versus the maximum value this exponent can take, causing us to think
that the value was too big to fit. But it isn't.
gdb/ChangeLog:
* doublest.c (convert_doublest_to_floatformat): Fix comparison
against maximum exponent value.
gdb/testsuite/ChangeLog:
* gdb.base/ldbl_e308.c, gdb.base/ldbl_e308.exp: New files.
On x86_64-windows with GCC 4.7 (using native SEH info), the debugger
behaves as follow:
(gdb) catch exception unhandled
Catchpoint 1: unhandled Ada exceptions
(gdb) run
Starting program: C:\[...]\b.exe
Catchpoint 1, unhandled CONSTRAINT_ERROR at 0x000000000040cc57 in _GCC_specific_handler ([...]) at ../../../src/libgcc/unwind-seh.c:289
[...]
This is after compiler the following code:
procedure B is
begin
raise Constraint_Error;
end B;
... using the following command:
% gnatmake -g b
When hitting the exception catchpoint, it should have gone up the stack
all the way until finding the frame corresponding to procedure B.
But if stopped short because unwind-seh.c is compiled with debugging
information, and the debugger is also able to locate that source file.
To prevent this from happening, this patch adds unwind-seh.c to the list
of files that should be ignored, regardless of other factors.
gdb/ChangeLog:
* ada-lang.h (ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS): Add entry for
"unwind-seh.c".
gdb/ChangeLog:
* ada-lang.c (ada_template_to_fixed_record_type_1): Do not
strip typedef layer when computing the fixed type's field type,
only when computing its size.
gdb/testsuite/ChangeLog:
* gdb.ada/unc_arr_ptr_in_var_rec: New testcase.
The following works...
% gdb c:\path to exe\foo.exe
(gdb) start
... unless a file or directory called "c:\path" or "c:\path to" exist.
This is what happens in the latter case:
(gdb) start
[...]
Error creating process C:\path to exe\foo.exe (error 193).
This is because we are calling CreateProcess (et al) without specifying
the lpApplicationName, so Windows determines the name of the executable
using the second argument, which is the entire command line. This
command line is a space-separated list of tokens, so the space in
the path to the executable which potentially creates an ambiguity.
The ambiguity is automatically resolved unless we're in the situation
above.
The solution, as suggested by the MSDN documentation for CreateProcess
is to quote the executable name.
gdb/ChangeLog:
* windows-nat.c (windows_create_inferior) [!__CYGWIN__]:
New local variable args_len.
Quote the name of the executable when computing the command line.
* dwarf_reader.cc (Dwarf_info_reader::do_parse): Use stored
abbrev_shndx.
* dwarf_reader.h (Dwarf_info_reader::Dwarf_info_reader): Initialize
abbrev_shndx_.
(Dwarf_info_reader::set_abbrev_shndx): New method.
(Dwarf_info_reader::abbrev_shndx_): New data member.
* dwarf_reader.cc (make_elf_reloc_mapper): Check size and endianness
from object, not parameters.
(Dwarf_info_reader::parse): Likewise.
* object.h (Relobj::elfsize, Relobj::is_big_endian): New methods.
(Relobj::do_elfsize, Relobj::do_is_big_endian): New methods.
(Sized_relobj::do_elfsize, Sized_relobj::do_is_big_endian): New
methods.
On ppc-aix, type wchar_t is 2 bytes long, so override the default
target-wide-charset (UTF-32) with UTF-16. This allows us to print
wide characters correctly.
gdb/ChangeLog:
* rs6000-aix-tdep.c (rs6000_aix_auto_wide_charset): New function.
(rs6000_aix_init_osabi): Set auto_wide_charset gdbarch method.
Type wchar_t is only 2 bytes long on x86_64-windows.
gdb/ChangeLog:
* amd64-windows-tdep.c (amd64_windows_auto_wide_charset): New
function.
(amd64_windows_init_abi): Set auto_wide_charset gdbarch method
to amd64_windows_auto_wide_charset.
* Makefile.tpl (STAGE1_FLAGS_TO_PASS): New variable.
(all-[+prefix+][+module+]): Pass stage1_args to sub-makes.
(all-stage[+id+]-[+prefix+][+module+]): Likewise, if prev is false.
(clean-stage[+id+]-[+prefix+][+module+]): Likewise, if prev is false.
(host_modules): Set stage1_args to STAGE1_FLAGS_TO_PASS.
* Makefile.in: Regenerate.
* configure.ac (have_static_libs): New variable and associated check.
(stage1-ldflags): Move to after stage1_libs and set to -static-libstdc++
-static-libgcc if stage1_libs is empty and have_static_libs is yes.
* configure: Regenerate.