Clang complains about bad format strings (DWORD is an unsigned long, not
unsigned int) and signed/unsigned comparison.
This change is necessary for https://codereview.chromium.org/2712423002/
BUG=245456
Change-Id: I58da92d43d90ac535c165fca346ee6866dfce22e
Reviewed-on: https://chromium-review.googlesource.com/448037
Reviewed-by: Mark Mentovai <mark@chromium.org>
This handles a case encountered in ntdll.dll symbols for Windows 7,
where a PUBLIC would be emitted only for the entry point to the
function. The body of the function, however, is split in a PGO-ish
fashion to another remote location in the binary. Because of this, there
were large gaps in the RVA space that would be attributed to the "last"
function that happened to have an entry point before the gap. In
practice, something like this:
0x100 Func1
0x110 Func2
0x120 Func3
0x130 Func4
...
0x800 LaterFuncs
The bodies of Func1/2/3 tend to be implemented as a fast-path check,
followed by a jmp to somewhere in the range between 0x130 and 0x800.
Because no symbols are emitted for this range, everything is attributed
to Func4, causing crash misattribution.
In this CL, the change is: after emitting the entry point symbol, also
walk in the original OMAP entries through the untranslated binary, and
for each block until we resolve to a new symbol (via the same mechanism
as we found the entry point) emit another PUBLIC indicating that there's
another block that belongs to that symbol. This effectively breaks up
the "0x130 - 0x800" range above.
R=mark@chromium.org
BUG=chromium:678874
Change-Id: Ib3741abab2e7158c81e3e34bca4340ce4d3153a1
Reviewed-on: https://chromium-review.googlesource.com/446717
Reviewed-by: Mark Mentovai <mark@chromium.org>
This avoids compile time errors:
In file included from ./src/testing/googletest/include/gtest/gtest.h:1874:0,
from ./src/breakpad_googletest_includes.h:33,
from src/common/mac/macho_reader_unittest.cc:39:
src/common/mac/macho_reader_unittest.cc: In member function 'virtual void LoadCommand_SegmentBE32_Test::TestBody()':
./src/testing/googletest/include/gtest/internal/gtest-internal.h:133:55: error:
converting 'false' to pointer type for argument 1 of 'char testing::internal::IsNullLiteralHelper(testing::internal::Secret*)' [-Werror=conversion-null]
(sizeof(::testing::internal::IsNullLiteralHelper(x)) == 1)
^
...
src/common/mac/macho_reader_unittest.cc:1117:3: note: in expansion of macro 'EXPECT_EQ'
EXPECT_EQ(false, actual_segment.bits_64);
Change-Id: I0cf88160dbe17b0feebed3c91ad65491b81023fd
Reviewed-on: https://chromium-review.googlesource.com/439004
Reviewed-by: Mark Mentovai <mark@chromium.org>
The Windows build has rotted a bit with the gtest/gmock updates.
Update all of the paths to fix things up again.
Change-Id: Id67ce76abfd331c0543aa4bd1138e9cc13a18c75
Reviewed-on: https://chromium-review.googlesource.com/441584
Reviewed-by: Mark Mentovai <mark@chromium.org>
code.google.com is obsolete.
Fix all broken markdown links while at it.
Change-Id: I6a337bf4b84eacd5f5c749a4ee61331553279009
Reviewed-on: https://chromium-review.googlesource.com/411800
Reviewed-by: Mike Frysinger <vapier@chromium.org>
For more details take a look at common/using_std_string.h
BUG=
Change-Id: Ifebfc57f691ef3a3bef8cfed7106c567985edffc
Reviewed-on: https://chromium-review.googlesource.com/399738
Reviewed-by: Mark Mentovai <mark@chromium.org>
CIE looks like it's been emitted by clang since ~May 2015 [1]. This
means that we didn't have any CFI because this parse aborted, which
meant that all stack walks reverted to stack scanning. Allow expected
values for address size and segment descriptor size through so that
dump_syms can generate at least somewhat reasonable data.
[1]: http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20150518/277292.htmlR=mark@chromium.org
BUG=chromium:627529
Change-Id: I6dc92f51c4afd25c2adff92c09ccb8bb03bf9112
Reviewed-on: https://chromium-review.googlesource.com/406012
Reviewed-by: Mark Mentovai <mark@chromium.org>
Found by PVS-Studio!
BUG=chromium:660198
Change-Id: I2605de2b1499f85c6e01d19e87e9eeb6af8486f3
Reviewed-on: https://chromium-review.googlesource.com/404552
Reviewed-by: Mike Frysinger <vapier@chromium.org>
The Rust compiler uses GCC C++ name mangling, but it has another layer of
encoding so abi::cxa_demangle doesn't produce great results. This patch
changes dump_syms to dump unmangled names by default so that consumers can
demangle them after-the-fact.
It also adds a tiny bit of support for linking against a Rust library I wrote
that can demangle Rust symbols nicely:
https://github.com/luser/rust-demangle-capi
BUG=
Change-Id: I63a425035ebb7ac516f067fed2aa782849ea9604
Reviewed-on: https://chromium-review.googlesource.com/402308
Reviewed-by: Mark Mentovai <mark@chromium.org>
The DWARF data for Swift code has a top-level DW_TAG_module DIE as the
child of the DW_TAG_compile_unit DIE and the parent of the
DW_TAG_subprogram DIEs that dump_syms uses to locate functions.
dump_syms needs to process DW_TAG_module DIEs as introducing nested
scopes to make it work with Swift.
This also reworks demangling to be language-specific, so that the C++
demangler isn't invoked when processing Swift code. The DWARF data for
Swift code presents its mangled names in the same form as used for C++
(DW_AT_MIPS_linkage_name or DW_AT_linkage_name) but the mangling is
Swift-specific (beginning with _T instead of _Z). There is no
programmatic interface to a Swift name demangler as an analogue to C++'s
__cxa_demangle(), so mangled Swift names are exposed as-is. Xcode's
"xcrun swift-demangle" can be used to post-process these mangled Swift
names on macOS.
Support for mangled names presented in a DW_AT_linkage_name attribute,
as used by DWARF 4, is added. This supersedes the earlier use of
DW_AT_MIPS_linkage_name.
BUG=google-breakpad:702,google-breakpad:715
R=ted.mielczarek@gmail.com
Review URL: https://codereview.chromium.org/2147523005 .
Patch provided by Thomas Schweitzer.
BUG=
Change-Id: I1721db8cab7774b433ff6703a0ddc1eab6620c0b
Reviewed-on: https://chromium-review.googlesource.com/379898
Reviewed-by: Mark Mentovai <mark@chromium.org>
For more details take a look at common/using_std_string.h
BUG=
Change-Id: I11f1ce697be23e13f12ea8f0468bbe02fa63c967
Reviewed-on: https://chromium-review.googlesource.com/378159
Reviewed-by: Mark Mentovai <mark@chromium.org>
This reverts commit 0fc6d0c8df because it
does not compile in Chromium due to the following error:
In file included from ../../breakpad/src/client/linux/minidump_writer/linux_dumper.h:43:0,
from ../../breakpad/src/client/linux/minidump_writer/minidump_writer.h:41,
from ../../breakpad/src/client/linux/handler/exception_handler.h:42,
from ../../components/crash/content/app/breakpad_linux.cc:44:
../../breakpad/src/common/android/include/link.h:46:9: error: multi-line comment [-Werror=comment]
#endif // !defined(__aarch64__) && !defined(__x86_64__) && \
^
> Don't define |r_debug| and |link_map| on Android releases 21 and later
>
> NDKs for Android 21 and later have the data structures |r_debug| and
> |link_map| defined in their header files. Defining them multiple times
> generates a compiler error.
>
> This patch protects both data structures from definition on Android 21
> and later.
>
> BUG=629088
> R=rmcilroy@chromium.org
>
> Review URL: https://codereview.chromium.org/2156173002 .
>
> Patch from Thomas Zimmermann <tzimmermann@mozilla.com>.
>
> Committed: https://chromium.googlesource.com/breakpad/breakpad/+/0ebdc4a10a506e2a4a3a039c479b40219a84b760
BUG=629088
Change-Id: Ia8d7d0eff060d661113e544d732813820bcb69e0
Reviewed-on: https://chromium-review.googlesource.com/367717
Reviewed-by: Mark Mentovai <mark@chromium.org>
NDKs for Android 21 and later have the data structures |r_debug| and
|link_map| defined in their header files. Defining them multiple times
generates a compiler error.
This patch protects both data structures from definition on Android 21
and later.
BUG=629088
R=rmcilroy@chromium.org
Review URL: https://codereview.chromium.org/2156173002 .
Patch from Thomas Zimmermann <tzimmermann@mozilla.com>.
I'd like to have the Build ID available for our symbol server
uploading, and this will make it easy.
Most of this change is me rewriting dump_symbols_unittest to be
typed tests so I could add a new test there.
R=mark@chromium.org
BUG=
Review URL: https://codereview.chromium.org/2052263002 .
A bunch of gtest assert statements fail due to signed warnings as
unadorned constants are treated as signed integers. Mark them all
unsigned to avoid that.
One example (focus on the "[with ...]" blocks that show the types):
In file included from src/breakpad_googletest_includes.h:33:0,
from src/common/memory_unittest.cc:30:
src/testing/gtest/include/gtest/gtest.h: In instantiation of 'testing::AssertionResult testing::internal::CmpHelperEQ(const char*, const char*, const T1&, const T2&) [with T1 = int; T2 = long unsigned int]':
src/testing/gtest/include/gtest/gtest.h:1524:23: required from 'static testing::AssertionResult testing::internal::EqHelper<true>::Compare(const char*, const char*, const T1&, const T2&, typename testing::internal::EnableIf<(! testing::internal::is_pointer<T2>::value)>::type*) [with T1 = int; T2 = long unsigned int; typename testing::internal::EnableIf<(! testing::internal::is_pointer<T2>::value)>::type = void]'
src/common/memory_unittest.cc:41:246: required from here
src/testing/gtest/include/gtest/gtest.h:1448:16: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
if (expected == actual) {
^
cc1plus: some warnings being treated as errors
Makefile:5180: recipe for target 'src/common/src_client_linux_linux_client_unittest_shlib-memory_unittest.o' failed
make[2]: *** [src/common/src_client_linux_linux_client_unittest_shlib-memory_unittest.o] Error 1
R=ted.mielczarek@gmail.com
Review URL: https://codereview.chromium.org/2013893003 .
We tried to use common/android/include/elf.h, however it contains
'#include-next elf.h' so it still breaks MAC build. So we use
third_party/musl/include/elf.h instead.
BUG=none
TEST=make; make test passes. There is no '#include-next elf.h' in
the new elf.h
R=michaelbai@chromium.org
Review URL: https://codereview.chromium.org/1994633003 .
It's possible for `IDiaSymbol::get_name` to return S_OK and provide
and empty string. I haven't figured out the exact root cause yet
(the symbols in question are coming from the Rust standard library),
but FUNC lines with missing function names break the processor and
so we should never do it. This change makes it output "<name omitted>"
which matches the behavior of the DWARF dumping code.
R=mark@chromium.org
BUG=https://bugzilla.mozilla.org/show_bug.cgi?id=1272278
Review URL: https://codereview.chromium.org/1985643004 .
This added debug fission support.
It tries to find the dwp file from the debug dir /usr/lib/debug/*/debug
and read symbols from them.
Most of this patch comes from
https://critique.corp.google.com/#review/52048295
and some fixes after that.
The elf_reader.cc comes from TOT google code. I just
removed some google dependency.
Current problems from this patch
1: Some type mismatch: from uint8_t * to char *.
2: Some hack to find the .dwp file. (replace .debug with .dwp)
BUG=chromium:604440
R=dehao@google.com, ivanpe@chromium.org
Review URL: https://codereview.chromium.org/1884283002 .
Currently an inlined function in a namespace in DWARF will
be given a name comprised of just `namespace::`. This is due
to a logic error in ComputeQualifiedName, where it doesn't
handle an empty `unqualified_name` properly.
We apparently have a fair number of these in our Mac builds,
an example of the DWARF that's being mishandled looks like:
0x117eda40: TAG_namespace [5] *
AT_name( "js" )
AT_decl_file( "../../dist/include/js/Utility.h" )
AT_decl_line( 35 )
0x11808500: TAG_subprogram [251] *
AT_low_pc( 0x0000000002f12110 )
AT_high_pc( 0x0000000002f1216b )
AT_APPLE_omit_frame_ptr( 0x01 )
AT_frame_base( rsp )
AT_abstract_origin( {0x0000000011800a4f}"_ZN2js40TraceManuallyBarrieredGenericPointerEdgeEP8JSTracerPPNS_2gc4CellEPKc" )
AT_MIPS_linkage_name( "_ZN2js40TraceManuallyBarrieredGenericPointerEdgeEP8JSTracerPPNS_2gc4CellEPKc" )
AT_name( "TraceManuallyBarrieredGenericPointerEdge" )
AT_decl_file( "/builds/slave/rel-m-rel-m64_bld-000000000000/build/js/src/gc/Marking.cpp" )
AT_decl_line( 547 )
AT_external( 0x01 )
AT_APPLE_optimized( 0x01 )
AT_inline( DW_INL_inlined )
This turned a few instances of this in the file I was testing on into
`<name omitted>`, which seems to just be a symptom of the
"DW_AT_abstract_origin comes later in the file" issue. (Which is probably
also worth fixing given that it occurs some 29k times when dumping
symbols from Firefox's XUL binary, but it's a separate issue.)
R=mark@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1887033002 .
GCC will still warn about unused return value with the form:
if (write(...));
Instead, change the semi-colon to an empty set of braces.
BUG=chromium:428478
TEST=build+test still works
It is often helpful to check if a particular symbol file dumped by
dump_syms actually matches a version of a binary file we have. The
symbol output contains an ID which can be used to see if it matches
the binary file. Unfortunately, this ID is internally calculated
and not a standard hash of the binary file. Being able to output the
header information only will allow users to determine whether their
symbol file is up to date or not.
R=jochen@chromium.org
BUG=561447
Review URL: https://codereview.chromium.org/1864823002 .
Patch from David Yen <dyen@chromium.org>.
Some projects will get build break because the comipler is confused when
searches for the standard stdio.h. Rename the wrapper file to avoid that.
renamed: src/common/stdio.h -> src/common/stdio_wrapper.h
modified: src/processor/minidump.cc
modified: src/processor/dump_context.cc
modified: src/processor/logging.cc
modified: src/processor/minidump.cc
modified: src/processor/minidump_processor.cc
modified: src/processor/stackwalk_common.cc
modified: src/processor/symbolic_constants_win.cc
R=mark@chromium.org, labath@google.com
Review URL: https://codereview.chromium.org/1864603002 .
Patch from Yunxiao Ma <yxma@google.com>.
This preserves full build ids in minidumps, which are useful for
tracking down the right version of system libraries from Linux
distributions.
The default build id produced by GNU binutils' ld is a 160-bit SHA-1
hash of some parts of the binary, which is exactly 20 bytes:
https://sourceware.org/binutils/docs-2.26/ld/Options.html#index-g_t_002d_002dbuild_002did-292
The bulk of the changes here are to change the signatures of the
FileID methods to use a wasteful_vector instead of raw pointers, since
build ids can be of arbitrary length.
The previous change that added support for this in the processor code
preserved the return value of `Minidump::debug_identifier()` as the
current `GUID+age` treatment for backwards-compatibility, and exposed
the full build id from `Minidump::code_identifier()`, which was
previously stubbed out for Linux dumps. This change keeps the debug ID
in the `dump_syms` output the same to match.
R=mark@chromium.org, thestig@chromium.org
BUG=
Review URL: https://codereview.chromium.org/1688743002 .
Some of the symbols in the stack trace are not found in the .dynsym
section but were located in the full symbol table .symtab section
instead. This was causing some of our stack traces to be incomplete or
point to incorrect function names.
Since we only output function names, there are actually not that many
more symbols located in .symtab that aren't in .dynsym. It is better to
simply output all symbols found so our stack traces are complete.
R=mark@chromium.org, thestig@chromium.org
BUG=561447
Review URL: https://codereview.chromium.org/1824063002 .
Patch from David Yen <dyen@chromium.org>.
Because tools/windows/symupload/symupload.cc uses `nullptr` (which
requires VS2010), the CLSID comparison is only performed for msdia100.dll
and later. When compiling with an older (or future) CLSID_DiaSource, we
retain the existing behaviour (i.e. fail if CoCreateInstance fails).
R=ivanpe@chromium.org
BUG=https://bugzilla.mozilla.org/show_bug.cgi?id=1236343
The method -[NSString stringByAddingPercentEscapesUsingEncoding:] has been
deprecated with 10.11 OS X SDK and 9.0 iOS SDK. The recommended method is
-[NSString stringByAddingPercentEncodingWithAllowedCharacters:] available
since 10.9 OS X SDK and 7.0 iOS SDK.
Use the new method when available using URLQueryAllowedCharacterSet to get
the same encoded string.
BUG=https://bugs.chromium.org/p/google-breakpad/issues/detail?id=675
BUG=569158
R=mark@chromium.org
Review URL: https://codereview.chromium.org/1680663002 .
This updates the GYP build for the processor component (on windows).
- adds/removes references to files which were added or removed from the
repository
- includes build/common.gypi in the gyp files: needed to correctly
detect the OS (I think, the generated MSVC solutions were broken
without it)
- conditionally compiles code platform-specific code for the given
platform
After this minidump processor nearly compiles with VS2013: the generated
project is correct, but some files still have compilation errors.
Disclaimer: I have not tested the GYP changes on non-windows platform,
as there does not seem to be anyone using it there.
BUG=
R=mark@chromium.org
Review URL: https://codereview.chromium.org/1643633004 .
