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llvm-svn: 268520
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Also added a data formatter that presents them as structs if you use frame
variable to look at their contents. Now the blocks testcase works.
<rdar://problem/15984431>
llvm-svn: 268307
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a bitfield member doesn't lie within the bit bounds of the type itself, just leave it out so we don't get clang asserting and killing our IDE when it gets unhappy with the information.
https://llvm.org/bugs/show_bug.cgi?id=27515
<rdar://problem/21082998>
llvm-svn: 268110
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or asserting.
<rdar://problem/23776428>
llvm-svn: 268098
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lldb::user_id_t for another SymbolFileDWARF:
CompilerDecl
SymbolFileDWARF::GetDeclForUID (lldb::user_id_t type_uid);
CompilerDeclContext
SymbolFileDWARF::GetDeclContextForUID (lldb::user_id_t type_uid)
CompilerDeclContext
SymbolFileDWARF::GetDeclContextContainingUID (lldb::user_id_t type_uid)
Type*
SymbolFileDWARF::ResolveTypeUID (lldb::user_id_t type_uid)
<rdar://problem/25592223>
llvm-svn: 267494
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Some older versions of clang emitted bit offsets that were negative and these bitfields would have their bitfield-ness stripped off and it would cause a clang assertion in clang assertions were enabled. I updated the bitfield C test to make sure we don't regress.
<rdar://problem/21082998>
llvm-svn: 267248
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section list that was used to try and cap symbols to the max address of the section in which it is contained. The empty sections would make cap the symbols and make their sizes zero. Also fixed a few other things that could cause problems in the SymbolFileDWARFDebugMap when zero sized symbols were found and used to make OSO range map entries.
<rdar://problem/25886773>
llvm-svn: 267237
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complete. If the type isn't complete, complete the type so that clang won't assert and kill your program. Since the DWARF assists in doing layout, it won't show the array or struct/unions/class elements correctly, but it will stop you from crashing if you have a struct/union/class that contains one of these arrays.
<rdar://problem/25057391>
llvm-svn: 266922
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languages where these languages use different type systems, you can end up trying to find the actualy definition for a forward declaration for a type, you will call:
TypeSP SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext (const DWARFDeclContext &dwarf_decl_ctx);
The problem was we might be looking for a type "Foo", and find one from another langauge. Then the DWARFASTParserClang would try to make an AST type using a CompilerType that might return an empty.
This fix makes sure that when we create a DWARFDeclContext from a DWARFDIE that the DWARFDeclContext we set the language of the DIE. Then when we go to find matches for DWARFDeclContext, we end up with bunch of DIEs. We check each DWARFDIE that we found by asking it for its language and making sure the language is compatible with the type system that we want to use. This keeps us from using the wrong types to resolve forward declarations.
<rdar://problem/25276165>
llvm-svn: 265196
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llvm-svn: 265124
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Summary:
In case of Dwo, DIERef stores a compile unit offset in the main object file, and not in the dwo.
The implementation of SymbolFileDWARFDwo::GetDIE inherited from SymbolFileDWARF tried to lookup
the compilation unit in the DWO based on the main object file offset (and failed). I change the
implementation to verify the DIERef indeed references compile unit belonging to this dwo and then
lookup the die based on the die offset alone.
Includes a couple of fixes for mismatched struct/class tags.
Reviewers: tberghammer, clayborg
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D18646
llvm-svn: 265011
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lldb::user_id_t out to the rest of LLDB:
1 - DWARF in .o files with debug map in executable: we would place the compile unit index in the upper 32 bits of the 64 bit value and the lower 32 bits would be the DIE offset
2 - DWO: we would place the compile unit offset in the upper 32 bits of the 64 bit value and the lower 32 bits would be the DIE offset
There was a mixing and matching of this and it wasn't done consistently.
Major changes include:
The DIERef constructor that takes a lldb::user_id_t now requires a SymbolFileDWARF:
DIERef(lldb::user_id_t uid, SymbolFileDWARF *dwarf)
It is needed so that it can be decoded correctly. If it is DWARF in .o files with debug map in executable, then we get the right compile unit from the SymbolFileDWARFDebugMap, otherwise, we use the compile unit offset and DIE offset for DWO or normal DWARF.
The function:
lldb::user_id_t DIERef::GetUID() const;
Now becomes
lldb::user_id_t DIERef::GetUID(SymbolFileDWARF *dwarf) const;
Again, we need the DWARF file to encode it correctly.
This removes the need for "lldb::user_id_t SymbolFileDWARF::MakeUserID() const" and for bool SymbolFileDWARF::UserIDMatches (lldb::user_id_t uid) const". There were also many places were doing things inneficiently like:
1 - encode a dw_offset_t into a lldb::user_id_t
2 - call the public SymbolFile interface to resolve types using the lldb::user_id_t
3 - This would then decode the lldb::user_id_t into a DIERef, and then try to find that type.
There are many places that are now doing this more efficiently by storing DW_AT_type form values as DWARFFormValue objects and then making a DIERef from them and directly calling the underlying function to resolve the lldb_private::Type, lldb_private::CompilerType, lldb_private::CompilerDecl, lldb_private::CompilerDeclContext.
If there are any regressions in DWARF with DWO, we will need to fix any issues that arise since the original patch wasn't functional for the much more widely used DWARF in .o files with debug map.
<rdar://problem/25200976>
llvm-svn: 264909
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Summary:
Since r264316, clang started adding DW_AT_GNU_dwo_name attribute to dwo files (previously, this
attribute was only present in main object files), breaking pretty much every dwo test. The
problem was that we were treating the presence of said attribute as a signal that we should look
for information in an external object file, and caused us to enter an infinite loop. I fix this
by making sure we do not go looking for an external dwo file if we already *are* parsing a dwo
file.
Reviewers: tberghammer, clayborg
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D18547
llvm-svn: 264729
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This allows these functions to be re-used by a forthcoming
PDBASTParser. The functions in question are CanCompleteType,
CompleteType, and CanImport. Conceptually, these functions belong
on ClangASTImporter anyway, and previously they were just ping
ponging around through a few levels of indirection to end up there
as well, so this patch actually makes the code somewhat simpler.
A few methods were moved to a new file called ClangUtil, so that
they can be shared between ClangASTImporter and ClangASTContext
without creating a circular dependency between those two cpp
files.
Differential Revision: http://reviews.llvm.org/D18381
llvm-svn: 264685
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unannotated case fall through warning.
llvm-svn: 263826
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in SymbolFileDWARF::ParseVariableDIE(). This was caught by the clang warning that catches unannotated case fall throughs.
llvm-svn: 263824
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Summary:
GCC does not emit DW_AT_data_member_location for members of a union.
Starting with a 0 value for member locations helps is reading union types
in such cases.
Reviewers: clayborg
Subscribers: ldrumm, lldb-commits
Differential Revision: http://reviews.llvm.org/D18008
llvm-svn: 263085
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but kept looking through .o files even after it had found as many
matches as were requested.
llvm-svn: 262051
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The purpose of these plugins is to make LLDB capable of debugging java
code JIT-ed by the android runtime.
Differential revision: http://reviews.llvm.org/D17616
llvm-svn: 262015
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Additionally fix the type of some dwarf expression where we had a
confusion between scalar and load address types after a dereference.
Differential revision: http://reviews.llvm.org/D17604
llvm-svn: 262014
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the right thing and break.
llvm-svn: 261950
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DWARF stores this information in the DW_AT_start_scope attribute. This
CL add support for this attribute and also changes the functions
displaying frame variables to only display the variables currently in
scope.
Differential revision: http://reviews.llvm.org/D17449
llvm-svn: 261858
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Inline functions in DWARF have AT_abstract_origin set, but we only handled that
if the functions were C++ methods. Inline functions -- C or C++ -- have this
also, and as a result they got one FunctionDecl for each inlined instance. When
going to construct the locals, this meant that the arguments (which did properly
have their abstract origins handled) would get associated with the master
FunctionDecl, and the inlined FunctionDecls would all appear to have no locals.
This manifested as not being able to look up local variables when stopped in an
inline fuunction. We should have had a test for this, but somewhere along the
line the relevant test case lost its .py file (or it never had one).
This patch fixes this problem and restores the .py file.
<rdar://problem/24712434>
llvm-svn: 261598
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the xcode project file to catch switch statements that have a
case that falls through unintentionally.
Define LLVM_FALLTHROUGH to indicate instances where a case has code
and intends to fall through. This should be in llvm/Support/Compiler.h;
Peter Collingbourne originally checked in there (r237766), then
reverted (r237941) because he didn't have time to mark up all the
'case' statements that were intended to fall through. I put together
a patch to get this back in llvm http://reviews.llvm.org/D17063 but
it hasn't been approved in the past week. I added a new
lldb-private-defines.h to hold the definition for now.
Every place in lldb where there is a comment that the fall-through
is intentional, I added LLVM_FALLTHROUGH to silence the warning.
I haven't tried to identify whether the fallthrough is a bug or
not in the other places.
I haven't tried to add this to the cmake option build flags.
This warning will only work for clang.
This build cleanly (with some new warnings) on macosx with clang
under xcodebuild, but if this causes problems for people on other
configurations, I'll back it out.
llvm-svn: 260930
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SymbolFileDWARF doesn't have a DebugRanges. If this happens print a nice error message to prompt the user to file a bug and attach the offending DWARF file so we can get the correct compiler fixed.
<rdar://problem/24458016>
llvm-svn: 260626
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assert(((SymbolFileDWARF*)m_ast.GetSymbolFile())->UserIDMatches(die.GetDIERef().GetUID()) &&
"Adding incorrect type to forward declaration map");
The problem is that "m_ast.GetSymbolFile()" can return a SymbolFileDWARFDebugMap. The code is doing the right thing if the assertion is ignored.
<rdar://problem/24437972>
llvm-svn: 260618
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file with "-fmodules -gmodules", each SymbolFileDWARF can reference module DWARF info by looking in other DWARF files. Then if you have 1000 .o files that each reference one or more .pcm files in their debug info, a simple Module::FindTypes(...) call can end up searching the same .pcm file over and over and over. Now all internal FindTypes methods in classes (ModuleList, Module, SymbolFile) now take an extra argument:
llvm::DenseSet<lldb_private::SymbolFile *> &searched_symbol_files
Each time a SymbolFile::FindTypes() is called, it needs to check the searched_symbol_files list to make sure it hasn't already been asked to find the type and return immediately if it has been checked. This will stop circular dependencies from also crashing LLDB during type queries.
This has proven to be an issue when debugging large applications on MacOSX that use DWARF in .o files.
<rdar://problem/24581488>
llvm-svn: 260434
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functions from being added to class definitions (see revision 260308 for details).
<rdar://problem/24483905>
<rdar://problem/24508374>
llvm-svn: 260322
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up when parsing expressions.
1) Turns out we weren't correctly uniquing types for C++. We would search our repository for "lldb_private::Process", but yet store just "Process" in the unique type map. Now we store things correctly and correctly unique types.
2) SymbolFileDWARF::CompleteType() can be called at any time in order to complete a C++ or Objective C class. All public inquiries into the SymbolFile go through SymbolVendor, and SymbolVendor correctly takes the module lock before it call the SymbolFile API call, but when we let CompilerType objects out in the wild, they can complete themselves at any time from the expression parser, so the ValueObjects or (SBValue objects in the public API), and many more places. So we now take the module lock when completing a type to avoid two threads being in the SymbolFileDWARF at the same time.
3) If a class has a template member function like:
class A
{
<template T>
void Foo(T t);
};
The DWARF will _only_ contain a DW_TAG_subprogram for "Foo" if anyone specialized it. This would cause a class definition for A inside a.cpp that used a "int" and "float" overload to look like:
class A
{
void Foo(int t);
void Foo(double t);
};
And a version from b.cpp that used a "float" overload to look like:
class A
{
void Foo(float t);
};
And a version from c.cpp that use no overloads to look like:
class A
{
};
Then in an expression if you have two variables, one name "a" from a.cpp in liba.dylib, and one named "b" from b.cpp in libb.dylib, you will get conflicting definitions for "A" and your expression will fail. This all stems from the fact that DWARF _only_ emits template specializations, not generic definitions, and they are only emitted if they are used. There are two solutions to this:
a) When ever you run into ANY class, you must say "just because this class doesn't have templatized member functions, it doesn't mean that any other instances might not have any, so when ever I run into ANY class, I must parse all compile units and parse all instances of class "A" just in case it has member functions that are templatized.". That is really bad because it means you always pull in ALL DWARF that contains most likely exact duplicate definitions of the class "A" and you bloat the memory that the SymbolFileDWARF plug-in uses in LLDB (since you pull in all DIEs from all compile units that contain a "A" definition) uses for little value most of the time.
b) Modify DWARF to emit generic template member function definitions so that you know from looking at any instance of class "A" wether it has template member functions or not. In order to do this, we would have to have the ability to correctly parse a member function template, but there is a compiler bug:
<rdar://problem/24515533> [PR 26553] C++ Debug info should reference DW_TAG_template_type_parameter
This bugs means that not all of the info needed to correctly make a template member function is in the DWARF. The main source of the problem is if we have DWARF for a template instantiation for "int" like: "void A::Foo<int>(T)" the DWARF comes out as "void A::Foo<int>(int)" (it doesn't mention type "T", it resolves the type to the specialized type to "int"). But if you actually have your function defined as "<template T> void Foo(int t)" and you only use T for local variables inside the function call, we can't correctly make the function prototype up in the clang::ASTContext.
So the best we can do for now we just omit all member functions that are templatized from the class definition so that "A" never has any template member functions. This means all defintions of "A" look like:
class A
{
};
And our expressions will work. You won't be able to call template member fucntions in expressions (not a regression, we weren't able to do this before) and if you are stopped in a templatized member function, we won't know that are are in a method of class "A". All things we should fix, but we need <rdar://problem/24515533> fixed first, followed by:
<rdar://problem/24515624> Classes should always include a template subprogram definition, even when no template member functions are used
before we can do anything about it in LLDB.
This bug mainly fixed the following Apple radar:
<rdar://problem/24483905>
llvm-svn: 260308
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A DWARF language vender extension for RenderScript was added to LLVM in r259348(http://reviews.llvm.org/D16409)
We should use this generated enum instead of the hardcoded value.
RenderScript is also based on C99 with some extensions, so we want to use ClangASTContext when RS is detected.
Reviewers: clayborg
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D16766
llvm-svn: 259634
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Differential revision: http://reviews.llvm.org/D16662
llvm-svn: 259098
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A lot of C code uses code like:
typedef struct
{
int a;
} FooType;
This creates debug info with an anonymous struct (a DW_TAG_structure_type with no DW_AT_name) and then a DW_TAG_typedef that points to the anonymous structure type. When a typedef is from a module and clang uses -gmodules and -fmodules, then we can end up trying to resolve an anonymous structure type in a DWO symbol file. This doesn't work very well when the structuture has no name, so we now check if a typedef comes from a module, and we directly resolve the typedef type in the module and copy it over. The version we copy from the module of course is correctly able to find the structure in the DWO symbol file, so this fixes the issues we run into.
<rdar://problem/24092915>
llvm-svn: 258443
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llvm-svn: 257818
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If your program refers to modules (as indicated in DWARF) we will now try to
load these modules and give you access to their types in expressions. This used
to be gated by a setting ("settings set target.auto-import-clang-modules true")
but that setting defaulted to false. Now it defaults to true -- but you can
disable it by toggling the setting to false.
llvm-svn: 257812
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This can happen with -gmodules tables when an anonymous struct is referred to.
llvm-svn: 257786
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We have a check what warns if the offset of a class member is greater
then or equal to the size of the class. The warning is valid in most
case but it is invalid when the last data member is a 0 size array
because in this case the member offset can be equal to the class size
(subject to alignment limitations).
This CL fixis LLDB to not print out a warning in this special case.
llvm-svn: 257603
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Previously we tried to parse the line table even if a compile unit
had no DW_AT_stmt_list atribute. The problem happens when a compiler
generates debug info for a compile unit but doesn't generate any line
info.
llvm-svn: 257335
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Summary:
This change is relevant for inferiors compiled with GCC. GCC does not
emit complete debug info for std::basic_string<...>, and consequently, Clang
(the LLDB compiler) does not generate correct mangled names for certain
functions.
This change removes the hard-coded alternate names in
ItaniumABILanguageRuntime.cpp.
Before the hard-coded names were put in ItaniumABILanguageRuntime.cpp, one could
not evaluate std::string methods (ex. std::string::length). After putting in
the hard-coded names, one could evaluate them. However, it did not still
enable one to call methods on, say for example, std::vector<string>.
This change makes that possible.
There is some amount of incompleteness in this change. Consider the
following example:
std::string hello("hello"), world("world");
std::map<std::string, std::string> m;
m[hello] = world;
One can still not evaluate the expression "m[hello]" in LLDB. Will
address this issue in another pass.
Reviewers: jingham, vharron, evgeny777, spyffe, dawn
Subscribers: clayborg, dawn, lldb-commits
Differential Revision: http://reviews.llvm.org/D12809
llvm-svn: 257113
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Reverts "Use correct format identifiers to print something meaningful."
Original format specifiers were correct.
Instead use void* casts to remove warnings, since this is what the %p specifier expects.
llvm-svn: 256833
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llvm-svn: 256769
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This patch adds support for printing global static const variables which are given a DW_AT_const_value DWARF tag by clang.
Fix for bug https://llvm.org/bugs/show_bug.cgi?id=25653
Reviewers: clayborg, tberghammer
Subscribers: emaste, lldb-commits
Differential Revision: http://reviews.llvm.org/D15576
llvm-svn: 255887
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Summary:
DWARF 5 proposes a reinvented .debug_macro section. This change follows
that spec.
Currently, only GCC produces the .debug_macro section and hence
the added test is annottated with expectedFailureClang.
Reviewers: spyffe, clayborg, tberghammer
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D15437
llvm-svn: 255729
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support.
It was previously reverted due to issues that showed up only on linux. I was able to reproduce these issues and fix the underlying cause.
So this is the same patch as 254476 with the following two fixes:
- Fix not trying to complete classes that don't have external sources
- Fix ClangASTSource::CompleteType() to check the decl context of types that it finds by basename to ensure we don't complete a type "S" with a type like "std::S". Before this fix ClangASTSource::CompleteType() would accept _any_ type that had a matching basename and copy it into the other type.
<rdar://problem/22992457>
llvm-svn: 254980
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.o files on Darwin."
The commit caused a test failure on the linux buildbot in
TestDataFormatterSynthVal.
llvm-svn: 254502
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on Darwin.
This is done by finding the types that are forward declarations that come from a module, and loading that module's debug info in a separate lldb_private::Module, and copying the type over into the current module using a ClangASTImporter object. ClangASTImporter objects are already used to copy types from on clang::ASTContext to another for expressions so the type copying code has been around for a while.
A new FindTypes variant was added to SymbolVendor and SymbolFile:
size_t
SymbolVendor::FindTypes (const std::vector<CompilerContext> &context, bool append, TypeMap& types);
size_t
SymbolVendor::FindTypes (const std::vector<CompilerContext> &context, bool append, TypeMap& types);
The CompilerContext is a way to represent the exact context of a type and pass it through an agnostic API boundary so that we can find that exact context elsewhere in another file. This was required here because we can have a module that has submodules, both of which have a "foo" type.
I am not able to add tests for this yet as we currently don't build our C/C++/ObjC binaries with the clang binary that we build. There are some driver issues where it can't find the header files for the C and C++ standard library which makes compiling these tests hard. We can't also guarantee that if we are building with clang that it supporst the exact format of -gmodule debugging that we are trying to test. We have had other versions of clang that had a different implementation of -gmodule debugging that we are no longer supporting, so we can't enable tests if we are building with clang without compiling something and looking at the structure of the DWARF that was generated to ensure that it is the format we can actually use.
llvm-svn: 254476
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A very expected layout: source tree is in ~/src/llvm, the build directory is in
~/src/llvm-build, and the install location is in /usr/local/{lib,include}.
The DWARF information in /usr/local/lib/libLLVM.a for ilist.h points to
~/src/llvm-build/include/llvm/ADT/ilist.h. Now, when someone includes
"llvm/ADT/ilist.h" and links against /usr/local/lib/libLLVM.a. Disaster.
The DWARF information in libUser.so for ilist.h points to two locations: the one
in /usr/include, and the one in ~/src/llvm-build/include. LLDB gets confused.
Let's uniquify fully-qualified names and never trip on such a thing.
Differential Revision: http://reviews.llvm.org/D14549
llvm-svn: 252898
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llvm-svn: 252605
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llvm-svn: 252067
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emitting full definitions for types that are member variables of classes. If we try to make a class with a member where the type of the class in a forward declaration, clang will assert and crash and bring down the IDE. This is not acceptable so we need to work around it. We work around it by making sure that if we have a member that is an instance (not a pointer or reference) of a class/struct/union, that it is a complete type. If it isn't then we emit an error to let the user know to file a bug against the compiler, and then we make the class complete, but empty. We also do this for base classes elsewhere. We use the DWARF to help layout the type, so we will get all instance variables correct, but we just won't have visibility into this instance variable.
llvm-svn: 252001
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Summary:
The solution to bug 24074,rL249673 needed
to parse the function information from the Dwarf in order
to set the SymbolContext. For that, GetFunction was called
for the parent in GetTypeForDIE, which parses the
ChildParameters and in the flow, GetTypeForDIE was called
for one of the sibling die and so an infinite
loop was triggered by calling GetFunction repeatedly for the
same function.
The changes in this revision modify the GetTypeForDIE to only
resolve the function context in the Type Lookup flow and so
prevent the infinite loop.
A testcase has also been added to check for regression in the
future and a test vector had been added to the testcase of
24074.
Reviewers: jingham, tberghammer, clayborg
Differential Revision: http://reviews.llvm.org/D14202
llvm-svn: 251917
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