https://llvm.org/bugs/show_bug.cgi?id=31704
Bug ID: 31704
Summary: SBModule::FindFirstType does not find a second
namespaced typedef with the same name
Product: lldb
Version: unspecified
Hardware: Macintosh
OS: MacOS X
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: lldb-...@lists.llvm.org
Reporter: alexandru.croi...@qt.io
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Created attachment 17871
--> https://llvm.org/bugs/attachment.cgi?id=17871&action=edit
Example code which shows the issue regarding FindFirstType
SBModule::FindFirstType has an issue with finding namespaced typedefs.
Consider the code:
class Foo {
public:
typedef bool MyType;
};
class Bar {
public:
typedef int MyType;
};
int main(int argc, char* argv[]) {
Foo::MyType foo;
Bar::MyType bar;
(void) foo;
(void) bar;
return 0;
}
Compile with clang++ -O0 -g ./main.cpp
Run with lldb ./a.out and go into python script mode
>>> lldb.target.FindTypes("MyType").GetSize()
2
>>> print lldb.target.FindFirstType("MyType")
typedef Foo::MyType
>>> print lldb.target.FindFirstType("Foo::MyType")
typedef Foo::MyType
>>> print lldb.target.FindFirstType("Bar::MyType")
As you can see, trying to find Bar::MyType fails, but if I iterate over
FindTypes result, I can find both.
(lldb) version
lldb-360.99.0
clang revision a41b64721d4be78870711cbb7b5af156a9e1f4ad
llvm revision 3c45ea423a9e3d27eaf77af0639a73e0c56d9a35
The issue seems to be inside lldb::TypeSP Module::FindFirstType(const
SymbolContext &sc, const ConstString &name, bool exact_match)
which passes "1" as the max_matches argument, and this gets propagated in a
wrong way inside the implementation, where essentially a list of the two types
is found, and the second type is not checked because the first type didn't
match.
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