https://bugs.llvm.org/show_bug.cgi?id=46394
Bug ID: 46394
Summary: [codeview] Misssing LF_NESTTYPE with nested templates
(structure/class)
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: DebugInfo
Assignee: unassignedb...@nondot.org
Reporter: international.phan...@gmail.com
CC: jdevliegh...@apple.com, keith.wal...@arm.com,
llvm-bugs@lists.llvm.org,
paul_robin...@playstation.sony.com
Given the following test case:
//---------------------------------------------------------
template <typename T> struct Template_A {
template <typename U> struct Template_B { U Member_TB; };
Template_B<char> Member_TA;
};
Template_A<int> MyTemplate;
struct Struct_A {
struct Struct_B {
char Member_SB;
};
Struct_B Member_SA;
};
Struct_A MyClass;
//---------------------------------------------------------
Using the command line to generate debug info CodeView:
clang -c -g -O0 test.cpp -o test-cv.o -gcodeview --target=x86_64-windows
The output generated by llvm-pdbutil, shows that Clang does emit the
LF_NESTTYPE for nested structure/class. But it does not emit it if the
structure/class is a template.
The LF_STRUCTURE in the case of templates, does not have the 'contains nested
class' flag.
----------
`Struct_A`
----------
0x100C | LF_STRUCTURE `Struct_A`
field list: 0x100B
options: contains nested class ** Nested Info **
0x100B | LF_FIELDLIST
- LF_MEMBER [name = `Member_SA`, Type = 0x100A]
- LF_NESTTYPE [name = `Struct_B`, parent = 0x100A]
-----------------
`Template_A<int>`
-----------------
0x1003 | LF_STRUCTURE `Template_A<int>`
field list: 0x1002
options: ** Missing Nested Info **
0x1002 | LF_FIELDLIST
- LF_MEMBER [name = `Member_TA`, Type = 0x1001]
MSVC emits the LF_NESTTYPE for all cases (templates and non-templates).
----------
`Struct_A`
----------
0x1009 | LF_STRUCTURE `Struct_A`
field list: 0x1008
options: contains nested class ** Nested Info **
0x1008 | LF_FIELDLIST
- LF_NESTTYPE [name = `Struct_B`, parent = 0x1007]
- LF_MEMBER [name = `Member_SA`, Type = 0x1007]
-----------------
`Template_A<int>`
-----------------
0x1003 | LF_STRUCTURE `Template_A<int>`
field list: 0x1002
options: contains nested class ** Nested Info **
0x1002 | LF_FIELDLIST
- LF_NESTTYPE [name = `?$Template_B@D`, parent = 0x1001]
- LF_MEMBER [name = `Member_TA`, Type = 0x1001]
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