History log of /external/lldb/include/lldb/Symbol/Block.h
Revision Date Author Comments (<<< Hide modified files) (Show modified files >>>)
36da2aa6dc5ad9994b638ed09eb81c44cc05540b 25-Jan-2013 Greg Clayton <gclayton@apple.com> <rdar://problem/13069948>

Major fixed to allow reading files that are over 4GB. The main problems were that the DataExtractor was using 32 bit offsets as a data cursor, and since we mmap all of our object files we could run into cases where if we had a very large core file that was over 4GB, we were running into the 4GB boundary.

So I defined a new "lldb::offset_t" which should be used for all file offsets.

After making this change, I enabled warnings for data loss and for enexpected implicit conversions temporarily and found a ton of things that I fixed.

Any functions that take an index internally, should use "size_t" for any indexes and also should return "size_t" for any sizes of collections.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@173463 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
243a08c68876912c90440c0c6c0f95cb49af21c9 01-Sep-2012 Jim Ingham <jingham@apple.com> Add a convenience function to get the range containing a given PC specified as load address + Target.

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@163038 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
b3a1a2bba41281ba56a99fe64887a8a04760784c 14-Jul-2012 Greg Clayton <gclayton@apple.com> <rdar://problem/11870357>

Allow "frame variable" to find ivars without the need for "this->" or "self->".


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@160211 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
3508c387c3f0c9ecc439d98048fd7694d41bab1b 24-Feb-2012 Greg Clayton <gclayton@apple.com> <rdar://problem/10103468>

I started work on being able to add symbol files after a debug session
had started with a new "target symfile add" command and quickly ran into
problems with stale Address objects in breakpoint locations that had
lldb_private::Section pointers into modules that had been removed or
replaced. This also let to grabbing stale modules from those sections.
So I needed to thread harded the Address, Section and related objects.

To do this I modified the ModuleChild class to now require a ModuleSP
on initialization so that a weak reference can created. I also changed
all places that were handing out "Section *" to have them hand out SectionSP.
All ObjectFile, SymbolFile and SymbolVendors were inheriting from ModuleChild
so all of the find plug-in, static creation function and constructors now
require ModuleSP references instead of Module *.

Address objects now have weak references to their sections which can
safely go stale when a module gets destructed.

This checkin doesn't complete the "target symfile add" command, but it
does get us a lot clioser to being able to do such things without a high
risk of crashing or memory corruption.




git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@151336 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
81a20a017b4e3fae0579854aa47aedadd198c118 10-Oct-2011 Greg Clayton <gclayton@apple.com> Patch from Dragos Tatulea regarding typedefs with the new RangeArray template class.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@141546 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
be42123fa214b039b86ad152bd21d910db7a7af2 08-Oct-2011 Greg Clayton <gclayton@apple.com> Changed RangeMap over to use llvm::SmallVector and updated the RangeArray and the RangeDataArray to have an extra "unsigned N" template parameter. Updated the lldb_private::Block to use a RangeArray with a uint32_t for both the function base offset and block range size, and then a 1 for the small vector size since most lexical blocks in DWARF only have 1 range. Updates the DWARFDebugRanges RangeArray to use an unsigned of 2 since most blocks that have more than one range usually have 2. Also updated a DWARFDebugAranges to default their RangeArray to use a SmallVector with unsigned size of 1 since this will take care of the .o files when doing DWARF in .o files and since there really isn't any good size we can guess with.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@141480 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
bc36a861b8e0b2f2dde34f27c9fa9629a357d598 08-Oct-2011 Greg Clayton <gclayton@apple.com> Added more functionality to Range template classes in RangeMap.h and converted remaining DWARF areas that were using ranges over to this class. Also converted lldb_private::Block to use it.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@141460 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
2f57db09a49f2a05a620b8163bbe1e748a46ec73 01-Oct-2011 Greg Clayton <gclayton@apple.com> Cleaned up the the code that figures out the inlined stack frames given a
symbol context that represents an inlined function. This function has been
renamed internally to:

bool
SymbolContext::GetParentOfInlinedScope (const Address &curr_frame_pc,
SymbolContext &next_frame_sc,
Address &next_frame_pc) const;

And externally to:

SBSymbolContext
SBSymbolContext::GetParentOfInlinedScope (const SBAddress &curr_frame_pc,
SBAddress &parent_frame_addr) const;

The correct blocks are now correctly calculated.

Switched the stack backtracing engine (in StackFrameList) and the address
context printing over to using the internal SymbolContext::GetParentOfInlinedScope(...)
so all inlined callstacks will match exactly.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@140910 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
6c19c8a7da08b89ee153d7091aa8641348e0482c 30-Sep-2011 Greg Clayton <gclayton@apple.com> <rdar://problem/10212450>

Don't parse function types all the time, only parse them lazily.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@140842 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
ed11c1ebc344458c2bc83aa5b0bf6b3d0e2ef987 30-Sep-2011 Greg Clayton <gclayton@apple.com> Fixed an issue where a lexical block or inlined function might have bad debug
information generated for it. Say we have a concrete function "foo" which
has inlined function "a" which calls another inlined function "b":

foo
1 {
2 {
a ()
3 {
b ()
4 {

}
}
}
}

Sometimes we see the compiler generate an address range in the DWARF for "foo"
(block 1 above) as say [0x1000-0x1100). Then the range for "a" is something
like [0x1050-0x1060) (note that it is correctly scoped within the "foo"
address range). And then we get "b" which is a child of "a", yet the debug
info says it has a range of [0x1060-0x1080) (not contained within "a"). We now
detect this issue when making our blocks and add an extra range to "a".

Also added a new "lldb" logging category named "symbol" where we can find out
about symbol file errors and warnings.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@140822 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
2cd9fbd2e10e80a2aaf6b48034928988151cadcd 29-Sep-2011 Greg Clayton <gclayton@apple.com> Free up some space in lldb_private::Block by not requiring a sibling pointer.
The old way of storing blocks used to use the sibling pointer, but now all
blocks contain a collection of shared pointers to blocks so this isn't required
anymore and a parent can be asked to find the sibling block for a child block.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@140808 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
23b8abbe214c252028f6e09f79169529c846409d 26-Sep-2011 Greg Clayton <gclayton@apple.com> Added more functionality to the public API to allow for better
symbolication. Also improved the SBInstruction API to allow
access to the instruction opcode name, mnemonics, comment and
instruction data.

Added the ability to edit SBLineEntry objects (change the file,
line and column), and also allow SBSymbolContext objects to be
modified (set module, comp unit, function, block, line entry
or symbol).

The SymbolContext and SBSymbolContext can now generate inlined
call stack infomration for symbolication much easier using the
SymbolContext::GetParentInlinedFrameInfo(...) and
SBSymbolContext::GetParentInlinedFrameInfo(...) methods.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@140518 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
c51ffbf896e398ada5f7e89b2fa5aec6f2224f09 12-Aug-2011 Greg Clayton <gclayton@apple.com> We were leaking a stack frame in StackFrameList in Thread.cpp which could
cause extra shared pointer references to one or more modules to be leaked.
This would cause many object files to stay around the life of LLDB, so after
a recompile and rexecution, we would keep adding more and more memory. After
fixing the leak, we found many cases where leaked stack frames were still
being used and causing crashes in the test suite. These are now all resolved.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@137516 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
c617a4cb4a451be9d7e97d7af6e165d282b5390f 06-Aug-2011 Sean Callanan <scallanan@apple.com> This is an overhaul of the expression parser code
that detects what context the current expression is
meant to execute in. LLDB now properly consults
the method declaration in the debug information
rather than trying to hunt down the "this" or "self"
pointer by name, which can be misleading.

Other fixes include:

- LLDB now properly detects that it is inside
an inlined C++ member function.

- LLDB now allows access to non-const members when
in const code.

- The functions in SymbolFile that locate the
DeclContext containing a DIE have been renamed
to reflect what they actually do. I have added
new functions that find the DeclContext for the
DIE itself.

I have also introduced testcases for C++ and
Objective-C.


git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@136999 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
1bd2b2feb7694e06b9a971063c283f9c490479d2 18-Jun-2011 Greg Clayton <gclayton@apple.com> Fixed variable parsing to not parse block variables over and over due to an
issue in the way block variables are marked as parsed. In the DWARF parser we
always parse all blocks for a function at once, so we can mark all blocks as
having all variables parsed and avoid recursive function calls to try and
reparse things that have already been handled.

Fixed an issue with how variables get scoped into blocks. The DWARF parser can
now handle abtract class definitions that contain concrete static variables.
When the concrete instance of the class functions get instantiated, they will
track down the concrete block for the abtract block and add the variable to
each block.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@133302 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
ff44ab42e9f5d8e4d550e11d1b69413e0bc75b71 23-Apr-2011 Greg Clayton <gclayton@apple.com> Fixed the SymbolContext::DumpStopContext() to correctly indent and dump
inline contexts when the deepest most block is not inlined.

Added source path remappings to the lldb_private::Target class that allow it
to remap paths found in debug info so we can find source files that are elsewhere
on the current system.

Fixed disassembly by function name to disassemble inline functions that are
inside other functions much better and to show enough context before the
disassembly output so you can tell where things came from.

Added the ability to get more than one address range from a SymbolContext
class for the case where a block or function has discontiguous address ranges.




git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@130044 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
3c12604d5773abb8973e06a006ac460be9e426ea 08-Feb-2011 Greg Clayton <gclayton@apple.com> Fixed a crasher that could happen when trying to look at N_GSYM entries
in the DWARF + debug map symbol file parser.

Also cleaned up the "image lookup --address ADDR" output when we it results
in something that is in an inlined function. Now we correctly dump out the
full inlined call stack.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@125072 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
feb6e56275a8a7a53336bdb957064e9093e8e170 14-Nov-2010 Greg Clayton <gclayton@apple.com> Fixed a crasher (an assert was firing in the DWARF parser) when setting
breakpoints on inlined functions by name. This involved fixing the DWARF parser
to correctly back up and parse the concrete function when we find inlined
functions by name, then grabbing any appropriate inlined blocks and returning
symbol contexts with the block filled in. After this was fixed, the breakpoint
by name resolver needed to correctly deal with symbol contexts that had the
inlined block filled in in the symbol contexts.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@119017 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
98f930f429160f9777f626c3ac6aa609f4e965d2 20-Sep-2010 Caroline Tice <ctice@apple.com> Add GetDescription() and __repr__ () methods to most API classes, to allow
"print" from inside Python to print out the objects in a more useful
manner.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@114321 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
fe424a92fc6fd92f810d243912461fe028a2b63c 18-Sep-2010 Greg Clayton <gclayton@apple.com> General command line help cleanup:
- All single character options will now be printed together
- Changed all options that contains underscores to contain '-' instead
- Made the help come out a little flatter by showing the long and short
option on the same line.
- Modified the short character for "--ignore-count" options to "-i"



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@114265 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
eea264007bc5fb42c8f3239726a9d28ae42e1b7b 15-Sep-2010 Greg Clayton <gclayton@apple.com> Moved the section load list up into the target so we can use the target
to symbolicate things without the need for a valid process subclass.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@113895 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
a357ecfaec0c9c718e26d5558499622110993e73 14-Sep-2010 Greg Clayton <gclayton@apple.com> Fixed the implementation of "bool Block::Contains (const Block *block) const"
to return the correct result.

Fixed "bool Variable::IsInScope (StackFrame *frame)" to return the correct
result when there are no location lists.

Modified the "frame variable" command such that:
- if no arguments are given (dump all frame variables), then we only show
variables that are currently in scope
- if some arguments are given, we show an error if the variable is out of
scope



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@113830 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
69aa5d9a7620a183cdc4da12cc87ea82e2ffcbf9 07-Sep-2010 Greg Clayton <gclayton@apple.com> Added more API to lldb::SBBlock to allow getting the block
parent, sibling and first child block, and access to the
inline function information.

Added an accessor the StackFrame:

Block * lldb_private::StackFrame::GetFrameBlock();

LLDB represents inline functions as lexical blocks that have
inlined function information in them. The function above allows
us to easily get the top most lexical block that defines a stack
frame. When there are no inline functions in function, the block
returned ends up being the top most block for the function. When
the PC is in an inlined funciton for a frame, this will return the
first parent block that has inlined function information. The
other accessor: StackFrame::GetBlock() will return the deepest block
that matches the frame's PC value. Since most debuggers want to display
all variables in the current frame, the Block returned by
StackFrame::GetFrameBlock can be used to retrieve all variables for
the current frame.

Fixed the lldb_private::Block::DumpStopContext(...) to properly
display inline frames a block should display all of its inlined
functions. Prior to this fix, one of the call sites was being skipped.
This is a separate code path from the current default where inlined
functions get their own frames.

Fixed an issue where a block would always grab variables for any
child inline function blocks.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@113195 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
72b7158235500ae6d4b69ed378cbc36bf6e5cbe1 02-Sep-2010 Greg Clayton <gclayton@apple.com> Added a new bool parameter to many of the DumpStopContext() methods that
might dump file paths that allows the dumping of full paths or just the
basenames. Switched the stack frame dumping code to use just the basenames for
the files instead of the full path.

Modified the StackID class to no rely on needing the start PC for the current
function/symbol since we can use the SymbolContextScope to uniquely identify
that, unless there is no symbol context scope. In that case we can rely upon
the current PC value. This saves the StackID from having to calculate the
start PC when the StackFrame::GetStackID() accessor is called.

Also improved the StackID less than operator to correctly handle inlined stack
frames in the same stack.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@112867 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
b04e7a805310f2f2cc77947a8b263de9061617ae 24-Aug-2010 Greg Clayton <gclayton@apple.com> Got a lot of the kinks worked out in the inline support after debugging more
complex inlined examples.

StackFrame classes don't have a "GetPC" anymore, they have "GetFrameCodeAddress()".
This is because inlined frames will have a PC value that is the same as the
concrete frame that owns the inlined frame, yet the code locations for the
frame can be different. We also need to be able to get the real PC value for
a given frame so that variables evaluate correctly. To get the actual PC
value for a frame you can use:

addr_t pc = frame->GetRegisterContext()->GetPC();

Some issues with the StackFrame stomping on its own symbol context were
resolved which were causing the information to change for a frame when the
stack ID was calculated. Also the StackFrame will now correctly store the
symbol context resolve flags for any extra bits of information that were
looked up (if you ask for a block only and you find one, you will alwasy have
the compile unit and function).



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@111964 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
33ed170599d41fe407a4dcf5f0875c75e1ad1375 24-Aug-2010 Greg Clayton <gclayton@apple.com> Added support for inlined stack frames being represented as real stack frames
which is now on by default. Frames are gotten from the unwinder as concrete
frames, then if inline frames are to be shown, extra information to track
and reconstruct these frames is cached with each Thread and exanded as needed.

I added an inline height as part of the lldb_private::StackID class, the class
that helps us uniquely identify stack frames. This allows for two frames to
shared the same call frame address, yet differ only in inline height.

Fixed setting breakpoint by address to not require addresses to resolve.

A quick example:

% cat main.cpp

% ./build/Debug/lldb test/stl/a.out
Current executable set to 'test/stl/a.out' (x86_64).
(lldb) breakpoint set --address 0x0000000100000d31
Breakpoint created: 1: address = 0x0000000100000d31, locations = 1
(lldb) r
Launching 'a.out' (x86_64)
(lldb) Process 38031 Stopped
* thread #1: tid = 0x2e03, pc = 0x0000000100000d31, where = a.out`main [inlined] std::string::_M_data() const at /usr/include/c++/4.2.1/bits/basic_string.h:280, stop reason = breakpoint 1.1, queue = com.apple.main-thread
277
278 _CharT*
279 _M_data() const
280 -> { return _M_dataplus._M_p; }
281
282 _CharT*
283 _M_data(_CharT* __p)
(lldb) bt
thread #1: tid = 0x2e03, stop reason = breakpoint 1.1, queue = com.apple.main-thread
frame #0: pc = 0x0000000100000d31, where = a.out`main [inlined] std::string::_M_data() const at /usr/include/c++/4.2.1/bits/basic_string.h:280
frame #1: pc = 0x0000000100000d31, where = a.out`main [inlined] std::string::_M_rep() const at /usr/include/c++/4.2.1/bits/basic_string.h:288
frame #2: pc = 0x0000000100000d31, where = a.out`main [inlined] std::string::size() const at /usr/include/c++/4.2.1/bits/basic_string.h:606
frame #3: pc = 0x0000000100000d31, where = a.out`main [inlined] operator<< <char, std::char_traits<char>, std::allocator<char> > at /usr/include/c++/4.2.1/bits/basic_string.h:2414
frame #4: pc = 0x0000000100000d31, where = a.out`main + 33 at /Volumes/work/gclayton/Documents/src/lldb/test/stl/main.cpp:14
frame #5: pc = 0x0000000100000d08, where = a.out`start + 52

Each inline frame contains only the variables that they contain and each inlined
stack frame is treated as a single entity.




git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@111877 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
75ccf50c3371d8c8e293af25461705b86fb10a46 21-Aug-2010 Greg Clayton <gclayton@apple.com> Modified the host process monitor callback function Host::StartMonitoringChildProcess
to spawn a thread for each process that is being monitored. Previously
LLDB would spawn a single thread that would wait for any child process which
isn't ok to do as a shared library (LLDB.framework on Mac OSX, or lldb.so on
linux). The old single thread used to call wait4() with a pid of -1 which
could cause it to reap child processes that it shouldn't have.

Re-wrote the way Function blocks are handles. Previously I attempted to keep
all blocks in a single memory allocation (in a std::vector). This made the
code somewhat efficient, but hard to work with. I got rid of the old BlockList
class, and went to a straight parent with children relationship. This new
approach will allow for partial parsing of the blocks within a function.




git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@111706 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
12bec71b323dc520f0e985a86e09c4712559e115 28-Jun-2010 Greg Clayton <gclayton@apple.com> Added function name types to allow us to set breakpoints by name more
intelligently. The four name types we currently have are:

eFunctionNameTypeFull = (1 << 1), // The function name.
// For C this is the same as just the name of the function
// For C++ this is the demangled version of the mangled name.
// For ObjC this is the full function signature with the + or
// - and the square brackets and the class and selector
eFunctionNameTypeBase = (1 << 2), // The function name only, no namespaces or arguments and no class
// methods or selectors will be searched.
eFunctionNameTypeMethod = (1 << 3), // Find function by method name (C++) with no namespace or arguments
eFunctionNameTypeSelector = (1 << 4) // Find function by selector name (ObjC) names


this allows much more flexibility when setting breakoints:

(lldb) breakpoint set --name main --basename
(lldb) breakpoint set --name main --fullname
(lldb) breakpoint set --name main --method
(lldb) breakpoint set --name main --selector

The default:

(lldb) breakpoint set --name main

will inspect the name "main" and look for any parens, or if the name starts
with "-[" or "+[" and if any are found then a full name search will happen.
Else a basename search will be the default.

Fixed some command option structures so not all options are required when they
shouldn't be.

Cleaned up the breakpoint output summary.

Made the "image lookup --address <addr>" output much more verbose so it shows
all the important symbol context results. Added a GetDescription method to
many of the SymbolContext objects for the more verbose output.





git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@107075 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
b6773a75100fe0db284cda36abd6b65e95554fab 09-Jun-2010 Eli Friedman <eli.friedman@gmail.com> More random error/warning fixes.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@105695 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h
24943d2ee8bfaa7cf5893e4709143924157a5c1e 08-Jun-2010 Chris Lattner <sabre@nondot.org> Initial checkin of lldb code from internal Apple repo.


git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@105619 91177308-0d34-0410-b5e6-96231b3b80d8
/external/lldb/include/lldb/Symbol/Block.h