Alan Modra [Sat, 21 Sep 2019 08:43:52 +0000 (18:13 +0930)]
Work around gcc10 FAIL: S-records with constructors
gcc10 on x86_64 and powerpc64le recognises that the loop in
Foo::operator= can be turned into a call to memmove, which then
results in an undefined symbol when linking. Avoid that by making the
loop smaller.
* testsuite/ld-srec/sr3.cc (FOO_MSG_LEN): Set to 4.
Tamar Christina [Thu, 19 Sep 2019 12:15:02 +0000 (13:15 +0100)]
AArch64: Fix objdump tests
The newly added objdump -S tests check for source line mapping of a static
variable. But the test doesn't dump any data sections so this should never
pass.
This changes the test to dump all sections so the source mapping can be found.
Alan Modra [Thu, 12 Sep 2019 07:55:46 +0000 (17:25 +0930)]
PR24981, Hit assertion failure in ld/ldlang.c:7504
This fixes a problem with commit 128bf1fe608, a patch I made
2019-08-06. Apparently it is possible to trigger the assertion I
added during an LTO bootstrap, something I haven't reproduced.
However, I did find a case triggered by an odd linker script feature
that allows a file to be loaded from the script without specifying
that file on the command line. Regarding input sections:
"When you use a file name which is not an archive:file specifier
and does not contain any wild card characters, the linker will
first see if you also specified the file name on the linker command
line or in an INPUT command. If you did not, the linker will
attempt to open the file as an input file, as though it appeared on
the command line."
So putting
.foo : { foo.a(*) }
into a script supposedly extracts foo.a into .foo. Except it doesn't,
since this feature is meant for object files only. Well anyway,
assuming --whole-archive was given on the command line, foo.a contains
a -flto object and no other objects involved were -flto then we'll hit
the assert due to files added like foo.a here *not* having their input
statement put on the general statement list. Why these are not put on
the statement list isn't obvious but it has been that way since commit 193c5f93a17 in 1994.
Simon Marchi [Sat, 7 Sep 2019 16:03:56 +0000 (12:03 -0400)]
Change lookup_symbol's block_index parameter type to block_enum
The only two values valid to pass to the block_index parameter of
quick_symbol_functions::lookup_symbol are GLOBAL_BLOCK and STATIC_BLOCK,
part of enum block_enum. Change the type of that parameter to
block_enum.
Change also the block_index field of dw2_symtab_iterator in the same
way.. This makes it consistent with dw2_debug_names_iterator, which
already uses block_enum for its block_index field.
These parameters are only used as bools. This also
renames "flag" to "relocatable" to make it clearer
what it does.
gdb/ChangeLog:
2019-09-06 Christian Biesinger <cbiesinger@google.com>
* defs.h (relocate_gdb_directory): Change int to bool in
signature and rename flag to relocatable.
* main.c (relocate_path): Likewise.
(relocate_gdb_directory): Likewise.
Alan Modra [Fri, 6 Sep 2019 02:53:41 +0000 (12:23 +0930)]
beos.em qsort predicate tidy
lang_input_section_type** is better than lang_statement_union_type**
here since that is in fact the type passed to the qsort predicate,
and I think it's worth factoring out the common indirections.
* emultempl/beos.em (sort_by_file_name): Use appropriate
intermediary variables.
(sort_by_section_name): Likewise.
Alan Modra [Fri, 6 Sep 2019 02:37:05 +0000 (12:07 +0930)]
bfd_get_filename
This macro says:
/* Cast from const char * to char * so that caller can assign to
a char * without a warning. */
I reckon that isn't such a good idea since it can result in char*
variables where const char* is appropriate. Not very many places
need the char* cast.
Eric Botcazou [Thu, 5 Sep 2019 16:23:37 +0000 (18:23 +0200)]
Fix PR ld/24574
This restores a line that has been dropped when the auto-import feature
of the PE-COFF linker was overhauled about one year. It is necessary
for GDB to properly resolve extern symbol in DLLs.
ld/ChangeLog
* pe-dll.c (pe_find_data_imports): Replace again the original name
of the undefined symbol with the __imp_ prefixed one after it is
resolved.
Tom de Vries [Thu, 5 Sep 2019 12:33:10 +0000 (14:33 +0200)]
[gdb/testsuite] Restore breakpoint command in ui-redirect.exp
In gdb.base/ui-redirect.exp, the "save breakpoint" command is used to write
the current breakpoints to a file, but the actual output is not verified.
Consequently, the test has regressed in that the "print 1" command associated
with a breakpoint on main is removed by a subsequent runto_main, which first
deletes all breakpoints:
...
(gdb) break main
Breakpoint 1 at 0x4004d7: file start.c, line 34.
(gdb) commands
Type commands for breakpoint(s) 1, one per line.
End with a line saying just "end".
> PASS: gdb.base/ui-redirect.exp: commands
print 1
> PASS: gdb.base/ui-redirect.exp: print 1
end
(gdb) PASS: gdb.base/ui-redirect.exp: end
delete breakpoints
Delete all breakpoints? (y or n) y
...
and consequently the "save breakpoint" output is missing the breakpoint
command for main:
...
break main
- commands
- print 1
- end
break foo
break bar
...
Fix this by replacing "gdb_breakpoint main" with runto_main, and verifying the
"save breakpoints" output.
Tested on x86_64-linux.
gdb/testsuite/ChangeLog:
2019-09-05 Tom de Vries <tdevries@suse.de>
* lib/gdb.exp (cmp_file_string): New proc.
* gdb.base/ui-redirect.exp: Replace "gdb_breakpoint main" with
runto_main. Verify save breakpoints output.
Alan Modra [Thu, 5 Sep 2019 00:36:42 +0000 (10:06 +0930)]
PowerPC64 GOT_PCREL relocs
PC-relative relocs typically use the addend in adjusting what they are
relative to. For example:
bcl 20,31,1f
1: mflr 12
addi 12,12,xxx-1b
generates "R_PPC64_REL16 xxx+0x4" for the addi (when little-endian).
The addend reflects the fact that you want the offset relative to the
previous insn not the current one in this case.
So the question is, will we ever want to do something like that for an
instruction using R_PPC64_GOT_PCREL34? I thought so at the time I
first implemented support in ld but at the time I think the hardware
was possibly going to support pcrel+offset+reg addressing. In which
case you might want something like:
load_big_offset_into_r2
pld 3,sym-big_offset@got@pcrel(2)
which would be a way of supporting more than 8G offsets from code to
the GOT. We could do the same with
load_big_offset_into_r2
pla 9,sym-big_offset@got@pcrel
ldx 3,9,2
However, this is really a poor version of TOC-pointer relative code.
So let's go with an addend on R_PPC64_GOT_PCREL34 meaning that
sym+addend should be put in a GOT entry, and the relocation calculate
the pc-relative offset to that GOT entry.
Note that this is an extension to the ABI, which says (by the
expression given for GOT relocs) that non-zero addends on GOT and PLT
relocs are ignored. This is true for all GOT/PLT relocs, not just the
pcrel ones.
* elf64-ppc.c (ppc64_elf_check_relocs): Interpret an addend in
GOT_PCREL and PLT_PCREL relocs as affecting the value stored
in the GOT/PLT entry rather than affecting the offset to that
GOI/PLT entry.
(ppc64_elf_edit_toc, ppc64_elf_relocate_section): Likewise.
Alan Modra [Wed, 4 Sep 2019 06:00:37 +0000 (15:30 +0930)]
R_PPC64_PCREL_OPT
The loads and stores handled in the second instruction of a sequence
marked by R_PPC64_PCREL_OPT may be a prefix instruction. For example:
pld ra,symbol@got@pcrel
0:
pld rt,off(ra)
.reloc 0b-8,R_PPC64_PCREL_OPT,(.-8)-(0b-8)
can be optimised to
pld rt,symbol+off@pcrel
pnop
* elf64-ppc.c (xlate_pcrel_opt): Handle prefix loads and stores
in second instruction.
(ppc64_elf_relocate_section): Likewise.
Alan Modra [Mon, 2 Sep 2019 06:43:05 +0000 (16:13 +0930)]
PR24955, libbfd terminating program on out of memory
This patch fixes the worst of the cases where libbfd might terminate
a program due to calling xstrdup or xmalloc. I've also fixed some
error paths that didn't clean up properly.
PR 24955
* libbfd-in.h (bfd_strdup): New inline function.
* archive.c (_bfd_get_elt_at_filepos): Use bfd_strdup. Close
bfd on error.
* elfcode.h (_bfd_elf_bfd_from_remote_memory): Use bfd_strdup.
* opncls.c (bfd_fopen): Use bfd_strdup. Close fd and stream
on error.
(bfd_openstreamr): Use bfd_strdup.
(bfd_openr_iovec, bfd_openw, bfd_create): Likewise.
* plugin.c (try_load_plugin): Use bfd_malloc.
* libbfd.h: Regenerate.
Avoid expect's buffer overflow in info-var.exp test.
Once the executable is started, info variables can show thousands
of variables belonging to glibc (see below).
This long list of variables then causes the test to fail, due
to expect's buffer overflow:
Running /bd/home/philippe/gdb/git/build_binutils-gdb/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.base/info-var.exp ...
ERROR: internal buffer is full.
ERROR: internal buffer is full.
ERROR: internal buffer is full.
Fix this by testing 'info variables' without running the executable.
gdb ./info-var
...
Reading symbols from ./info-var...
(gdb) |info variables|wc
27 54 971
(gdb) start
Temporary breakpoint 1 at 0x1129: file /bd/home/philippe/gdb/git/build_binutils-gdb/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.base/info-var-f1.c, line 23.
Starting program: /bd/home/philippe/gdb/git/build_binutils-gdb/gdb/testsuite/outputs/gdb.base/info-var/info-var
Some domain_enum values were not handled in print_partial_symbols
which means that 'maintenance print psymbols' would print '<invalid
domain>' when it shouldn't have.
gdb/ChangeLog:
* psymtab.c (print_partial_symbols): Handle missing domain_enum
values MODULE_DOMAIN and COMMON_BLOCK_DOMAIN.
Tom Tromey [Mon, 13 May 2019 19:21:48 +0000 (13:21 -0600)]
Handle biased types
In Ada, the programmer can request that a range type with a non-zero
base be stored in the minimal number of bits required for the range.
This is done by biasing the values; so, for example, a range of -7..-4
may be stored as two bits with a bias of -7.
This patch implements this for gdb. It is done by adding a bias to
struct range_bounds and then adjusting a few spots to handle this.
The test case is written to use -fgnat-encodings=minimal, but a future
compiler patch will change the compiler to emit DW_AT_GNU_bias with
-fgnat-encodings=gdb. It seemed good to get the gdb patch in first.
Tested on x86-64 Fedora 29; plus a variety of targets using AdaCore's
internal test suite.
gdb/ChangeLog
2019-09-03 Tom Tromey <tromey@adacore.com>
* ada-valprint.c (ada_val_print_num): Don't recurse for range
types.
(has_negatives): Unbias a range type bound.
* dwarf2read.c (read_subrange_type): Handle DW_AT_GNU_bias.
* gdbtypes.c (operator==): Handle new field.
(create_range_type): Add "bias" parameter.
(create_static_range_type, resolve_dynamic_range): Update.
* gdbtypes.h (struct range_bounds) <bias>: New member.
(create_range_type): Add bias parameter.
* printcmd.c (print_scalar_formatted): Unbias range types.
* value.c (unpack_long): Unbias range types.
(pack_long): Bias range types.
gdb/testsuite/ChangeLog
2019-09-03 Tom Tromey <tromey@adacore.com>
* gdb.ada/bias.exp: New file.
* gdb.ada/bias/bias.adb: New file.
* gdb.ada/print_chars.exp: Add regression test.
* gdb.ada/print_chars/foo.adb (My_Character): New type.
(MC): New variable.
Nick Clifton [Tue, 3 Sep 2019 08:53:25 +0000 (09:53 +0100)]
Fix a potential buffer overrun in the MMIX disassembler when processing a corrupt input file.
PR 24958
* mmix-dis.c (MAX_REG_NAME_LEN): Define.
(MAX_SPEC_REG_NAME_LEN): Define.
(struct mmix_dis_info): Use defined constants for array lengths.
(get_reg_name): New function.
(get_sprec_reg_name): New function.
(print_insn_mmix): Use new functions.
Alan Hayward [Wed, 21 Aug 2019 14:36:37 +0000 (15:36 +0100)]
Check arguments for all probes before using them
There is a long standing bug in the Arm toolchain where invalid
stap probes get created due to the probes referring to symbols which
have been resolved away.
More details are here:
https://bugzilla.redhat.com/show_bug.cgi?id=1196181
When these invalid probes are present, GDB will create the breakpoints
and then fail to stop. The errors are only spotted the first time
GDB stops, which is too late.
The solution is to ensure the arguments for all the probes are
resolved before using them.
This fixes >100 timeouts when running break-interp.exp when using
bad probes.
gdb/ChangeLog:
* solib-svr4.c (svr4_find_and_create_probe_breakpoints): Check all
probe arguments.
Jim Wilson [Sun, 1 Sep 2019 04:22:36 +0000 (21:22 -0700)]
RISC-V: Fix linker problems with tls copy relocs.
The linker doesn't allocate memory space for sections that are only SEC_ALLOC
and SEC_THREAD_LOCAL. See the IS_TBSS test in ld/ldlang.c. So we need to
pretend that .tdata.dyn sections have contents to get the right result. It
will be marked this way anyways if there is a .tdata section to merge with.
bfd/
PR 23825
* elfnn-riscv.c (riscv_elf_create_dynamic_sections): Add SEC_LOAD,
SEC_DATA, and SEC_HAS_CONTENTS to .tdata.dyn section.
Jim Wilson [Fri, 30 Aug 2019 22:14:36 +0000 (15:14 -0700)]
RISC-V: Force linker error exit after unresolvable reloc.
This was noticed while trying to test the compiler -msave-restore support.
Putting non-pic code in a shared library gives a linker error, but doesn't
stop the build.
rohan:2030$ cat libtmp.c
extern int sub2 (int);
int sub (int i) { return sub2 (i + 10); }
rohan:2031$ cat libtmp2.c
extern int sub (int);
int sub2 (int i) { return sub (i + 10); }
rohan:2032$ riscv64-unknown-linux-gnu-gcc --shared -o libtmp.so libtmp.c
rohan:2033$ riscv64-unknown-linux-gnu-gcc --shared -o libtmp2.so libtmp2.c libtmp.so
/home/jimw/FOSS/install-riscv64/lib/gcc/riscv64-unknown-linux-gnu/8.3.0/../../../../riscv64-unknown-linux-gnu/bin/ld: /tmp/cctrsIBe.o(.text+0x18): unresolvable R_RISCV_CALL relocation against symbol `sub'
rohan:2034$ echo $?
0
rohan:2035$ ls -lt libtmp2.so
-rwxr-xr-x 1 jimw jimw 6912 Aug 30 14:32 libtmp2.so
rohan:2036$
The patch fixes this by forcing a linker error. I now get this.
ohan:2059$ sh tmp.script
/home/jimw/FOSS/BINUTILS/X-riscv64-linux/ld/ld-new: libtmp2.o(.text+0x18): unresolvable R_RISCV_CALL relocation against symbol `sub'
/home/jimw/FOSS/BINUTILS/X-riscv64-linux/ld/ld-new: final link failed: bad value
rohan:2060$ echo $?
1
rohan:2061$ ls -lt libtmp2.so
ls: cannot access 'libtmp2.so': No such file or directory
bfd/
* elfnn-riscv.c (riscv_elf_relocate_section): For unresolvable reloc
error, call bfd_set_error, set ret to FALSE, and goto out label.
This very simple patch removes the "\nError: " suffix from the warning
message printed by nat/fork-inferior.c:trace_start_error. This proved
to just pollute the screen, causing things like:
Starting program: /usr/bin/true
warning: Could not trace the inferior process.
Error:
warning: ptrace: Permission denied
This "Error: " string is not useful at all, and can confuse things,
therefore let's just remove it and simplify the resulting messages:
Starting program: /usr/bin/true
warning: Could not trace the inferior process.
warning: ptrace: Permission denied
Tom Tromey [Thu, 18 Jul 2019 20:38:39 +0000 (14:38 -0600)]
Remove tui_win_info::refresh_all
The TUI has two duplicate "re-render this window" methods, "rerender"
and "refresh_all". They differ only slightly in semantics, so I
wanted to see if they could be unified.
After looking into this, I decided that refresh_all was not needed.
There are 4 calls to tui_refresh_all_win (the only caller of this
method):
1. tui_enable. This sets the layout, which renders the windows.
2. tui_cont_sig. Here, I think it's sufficient to simply redraw the
current window contents from the curses backing store, because gdb
state didn't change while it was suspended
3. tui_dispatch_ctrl_char. This is the C-l handler, and here it's
explicitly enough to just refresh the screen (as above).
4. tui_refresh_all_command. This is the command equivalent of C-l.
So, this patch removes this method entirely and simplifies
tui_refresh_all_win.
gdb/ChangeLog
2019-08-30 Tom Tromey <tom@tromey.com>
Tom Tromey [Thu, 18 Jul 2019 20:04:14 +0000 (14:04 -0600)]
Swap tui_show_locator_content and tui_locator_window::rerender
This swaps the bodies ot tui_show_locator_content and
tui_locator_window::rerender, so that the latter does the work, and
the former is now just an exported convenience wrapper.
gdb/ChangeLog
2019-08-30 Tom Tromey <tom@tromey.com>
* tui/tui-stack.c (tui_show_locator_content): Move lower. Rewrite.
(tui_locator_window::rerender): Rewrite using body of previous
tui_show_locator_content.
Tom Tromey [Thu, 18 Jul 2019 19:46:23 +0000 (13:46 -0600)]
Don't call tui_refresh_all from show_layout
show_layout calls tui_refresh_all in one case. However, it doesn't
need to any more, because the resize method on each window will also
update the contents.
gdb/ChangeLog
2019-08-30 Tom Tromey <tom@tromey.com>
Tom Tromey [Wed, 17 Jul 2019 22:11:40 +0000 (16:11 -0600)]
Don't call touchwin in tui_gen_win_info::refresh_window
The call to touchwin in tui_gen_win_info::refresh_window was an
artifact of some earlier refactorings. Testing shows it isn't needed
any more -- I believe it was only ever needed for the data item window
display problem; but that's been solved more locally.
gdb/ChangeLog
2019-08-30 Tom Tromey <tom@tromey.com>
Tom Tromey [Mon, 15 Jul 2019 21:28:56 +0000 (15:28 -0600)]
Simplify register display
This patch starts with the observation that the code in
tui_data_window::display_registers_from can all be replaced with a
call to resize. To make this work propertly, it also changes
tui_display_register to be the "rerender" method on
tui_data_item_window.
The refresh_window method is needed due to the use of nested windows
here. The ncurses man page makes it sound like this is not very well
supported; and experience bears this out: negelecting the touchwin
call in this path will cause the register window to blank when
switching focus.
gdb/ChangeLog
2019-08-30 Tom Tromey <tom@tromey.com>
* tui/tui-regs.h (struct tui_data_item_window) <rerender,
refresh_window>: Declare.
* tui/tui-regs.c (tui_data_window::display_registers_from): Call
resize.
(tui_data_item_window::rerender): Rename from
tui_display_register.
(tui_data_item_window::refresh_window): New method.
* tui/tui-layout.c (tui_gen_win_info::resize): Do nothing on
no-op.
Tom Tromey [Sun, 14 Jul 2019 15:11:46 +0000 (09:11 -0600)]
Remove some calls in tui_data_window
This patch removes a call to erase_data_content in refresh_all and
then removes some other calls that are more clearly unnecessary once
one follows calls from that point.
gdb/ChangeLog
2019-08-30 Tom Tromey <tom@tromey.com>
Tom Tromey [Sun, 14 Jul 2019 14:27:34 +0000 (08:27 -0600)]
Remove tui_data_window::display_all_data
tui_data_window::rerender clears the data item windows, and then calls
display_all_data. However, that method only does anything if the
contents are not empty. So, display_all_data can be renamed and the
wrapper removed.
gdb/ChangeLog
2019-08-30 Tom Tromey <tom@tromey.com>
* tui/tui-regs.h (struct tui_data_window) <display_all_data>:
Don't declare.
* tui/tui-regs.c (tui_data_window::show_registers): Call
rerender.
(tui_data_window::rerender): Rename from display_all_data.
(tui_data_window::rerender): Remove old implementation.
Tom Tromey [Sun, 14 Jul 2019 14:21:16 +0000 (08:21 -0600)]
Remove NO_DATA_STRING
NO_DATA_STRING shouldn't be used. It's referenced in a single spot,
in tui_data_window::display_all_data. This patch removes the use and
replaces it with the more correct text. A later patch (though not in
this series) will remove this call entirely, when it's more obviously
correct to do so.
gdb/ChangeLog
2019-08-30 Tom Tromey <tom@tromey.com>
Sandra Loosemore [Thu, 29 Aug 2019 21:48:05 +0000 (14:48 -0700)]
Run argv0-symlink.exp only on native target and local host.
This testcase was originally for PR gdb/15415, a problem with the
"run" command expanding symlinks in the name of the program being run.
It does not correctly distinguish between files on build, host, and
target, and it is not clear if it would be testing anything useful in
configurations where "run" is not being used.
Bernhard Wodok [Tue, 27 Aug 2019 15:40:31 +0000 (11:40 -0400)]
Fix PR win32/24284: tcp_auto_retry doesn't work in MinGW
This was reported by Bernhard Wodok, along with a patch to fix the
issue. I adjusted the patch a bit, and I'm submitting the patch on
his behalf.
According to Bernhard, the issue can be reproduced by doing:
1. start gdb
2. enter 'target remote :2345'
3. observe that it throws a "connection refused" error immediately
instead of waiting and throwing a timeout error
I.e., I believe it can be reproduced by our current tests, which is
why I'm not proposing any extra tests here (well, I don't use nor have
any Windows system to test this, so...).
The problem happens because, on ser-tcp:wait_for_connect, we call
'gdb_select' passing 0 as its first argument, which, when using MinGW,
ends up using the 'gdb_select' version from mingw-hdep.c, and when the
first argument is 0 this means that WaitForMultipleObjects will be
called with 0 as its first argument as well. According to the MS API
docs, this is forbidden:
Alan Modra [Thu, 29 Aug 2019 09:05:54 +0000 (18:35 +0930)]
PR24697, R_PPC_EMB_SDA21 cannot be used when making a shared object
This removes a restriction on various R_PPC_EMB relocations that has
been present for ppc32 since 1996-04-26 git commit e25a798839. As far
as I know, only those relocs that would require addressing via r2 for
.sdata2/.sbss2 access are disallowed in shared libraries.
PR 24697
* elf32-ppc.c (ppc_elf_check_relocs): Call bad_shared_reloc
when !bfd_link_executable for R_PPC_EMB_SDA2I16 and
R_PPC_EMB_SDA2REL. Don't call bad_shared_reloc for any other
reloc.
Alan Modra [Thu, 29 Aug 2019 02:00:11 +0000 (11:30 +0930)]
PowerPC64 xlate_pcrel_opt
We can easily support an offset on the second instruction of a
sequence marked with R_PPC64_PCREL_OPT. For example,
pla ra,symbol@pcrel
ld rt,off(ra)
can be optimised to
pld rt,symbol+off@pcrel
nop
* elf64-ppc.c (xlate_pcrel_opt): Add poff parameter. Allow offset
on second insn, return it in poff.
(ppc64_elf_relocate_section): Add offset to paddi addend for
PCREL_OPT.
Jim Wilson [Thu, 29 Aug 2019 00:47:01 +0000 (17:47 -0700)]
RISC-V: Fix a gp relaxation reloc overflow error.
This was broken when I changed how we compute the value for the gp register.
It used to be computed inside the sdata section. Now it is computed at the
end which makes it an abs section symbol. There is code that tries to use
the alignment of the section that the gp value is in, but this does not work
if it is in the abs section, as the abs section has alignment of 1 byte.
There are people using alternative linker scripts that still define it in the
sdata section, so the code is still useful. Thus adding a check to disable
this when gp is in the abs section.
bfd/
* elfnn-riscv.c (_bfd_riscv_relax_lui): Add check to exclude abs
section when setting max_alignment. Update comment.
(_bfd_riscv_relax_pc): Likewise.
Alan Modra [Wed, 28 Aug 2019 23:34:08 +0000 (09:04 +0930)]
Tidy check_uvalue
I don't see a need to calculate "ptr = start + uvalue" then compare
"ptr" with "start" and "end". Given "start <= end" on entry, the
"uvalue" comparison with "max_uvalue" ought to be sufficient to ensure
"start + uvalue" is bounded by "start" and "end" regardless of the
size of pointers and the unsigned dwarf_vma integer type.
Alan Modra [Wed, 28 Aug 2019 07:04:34 +0000 (16:34 +0930)]
PR24891, objdump memory leaks when parsing malformed archive
BFD was leaking memory in bfd_check_format_matches. As part of
deciding the proper format of an archive, BFD looks at the format of
the first file stored. That file's bfd was left open for reasons
given in a comment removed in git commit 0e71e4955cd1 that said:
/* We ought to close `first' here, but we can't, because
we have no way to remove it from the archive cache.
It's close to impossible to figure out when we can
release bfd_ardata. FIXME. */
Well, things have changed since that comment was true and we now can
remove files from the archive cache. Closing the first file is good
and cures some of the leaks. Other leaks are caused by
bfd_check_format_matches throwing away bfd tdata before trying a new
match. That lost the element cache set up when format checking the
first element in the archive. The easiest and cleanest fix is to
simply disable the caching when checking the first element.
PR 24891
* bfd.c (struct bfd): Add no_element_cache.
* archive.c (_bfd_get_elt_at_filepos): Don't add element to
archive cache when no_element_cache.
(bfd_generic_archive_p): Set no_element_cache when opening first
element to check format. Close first element too.
(do_slurp_bsd_armap): Don't zero ardata->cache here.
* bfd-in2.h: Regenerate.
Tom de Vries [Wed, 28 Aug 2019 17:13:29 +0000 (19:13 +0200)]
[gdb/testsuite] Fix info-var.exp for debug info from other files
On openSUSE Leap 15.1, I get:
...
FAIL: gdb.base/info-var.exp: info variables
FAIL: gdb.base/info-var.exp: info variables -n
...
because the info variables command prints info also for init.c:
...
File init.c:^M
24: const int _IO_stdin_used;^M
...
while the regexps in the test-case only expect info for info-var-f1.c and
info-var-f2.c.
Fix this by extending the regexps.
Tested on x86_64-linux, both openSUSE Leap 15.1 and Fedora 30.
gdb/testsuite/ChangeLog:
2019-08-28 Tom de Vries <tdevries@suse.de>
* gdb.base/info-var.exp: Allow info variables to print info for files
other than info-var-f1.c and info-var-f2.c.
Andrew Burgess [Tue, 9 Jul 2019 14:49:07 +0000 (15:49 +0100)]
gdb/fortran: Don't include module symbols when searching for types
Currently the 'info types' command will return symbols that correspond
to Fortran modules. This is because the symbols are created with
domain MODULE_DOMAIN and address_class LOC_TYPEDEF. The address_class
LOC_TYPEDEF is the same address_class used for type symbols which is
why the modules show up when listing types.
This commit explicitly prevents symbols in the MODULE_DOMAIN from
appearing when we search for symbols in the TYPES_DOMAIN, this
prevents the Fortran module symbols from appearing in the output of
'info types'.
gdb/ChangeLog:
* symtab.c (search_symbols): Don't include MODULE_DOMAIN symbols
when searching for types.
Andrew Burgess [Tue, 9 Jul 2019 14:47:19 +0000 (15:47 +0100)]
gdb/fortran: Implement la_print_typedef for Fortran
Implement an la_print_typedef method for Fortran, this allows 'info
types' to work for Fortran. The implementation is just copied from
ada_print_typedef (with the appropriate changes).
To support the testing of this patch I added a new proc,
fortran_character1, to lib/fortran.exp which returns a regexp to match
a 1-byte character type. The regexp returned is correct for current
versions of gFortran. All of the other regexp are guesses based on
all of the other support procs in lib/fortran.exp, I haven't tested
them myself.
Nick Clifton [Wed, 28 Aug 2019 10:39:19 +0000 (11:39 +0100)]
Add a --source-comment=<text> option to objdump which provides a prefix to dipslayed source code lines.
PR 24931
* objdump.c (source_comment): New static variable.
(option_values): Add OPTION_SOURCE_COMMENT.
(long_opions): Add --source-comment.
(print_line): If source comment is set, use it as a prefix to the
source code line.
(main): Handle OPTION_SOURCE_COMMENT.
* doc/binutils.texi: Document the new option.
* NEWS: Mention the new feature.
* testsuite/binutils-all/objdump.exp (test_objdump_S): Add tests
of the -S and --source-comment options.
projects / thirdparty / binutils-gdb.git / log
