zequanwu added inline comments.
================
Comment at:
lldb/source/Plugins/SymbolFile/Breakpad/SymbolFileBreakpad.cpp:388-392
for (llvm::StringRef line : lines(Record::Func)) {
if (auto record = FuncRecord::parse(line))
add_symbol(record->Address, record->Size, record->Name);
}
----------------
labath wrote:
> zequanwu wrote:
> > labath wrote:
> > > Can you check if we can remove this now?
> > >
> > > I originally thought that we can remove this entire function, but I
> > > forgot about PUBLIC records -- we don't have functions or compile units
> > > for those, so they will have to stay.
> > Removing it causes FUNC records not showing up in symtab when doing `image
> > dump symtab ...` and fails some tests.
> > The Breakpad doc says
> > (https://chromium.googlesource.com/breakpad/breakpad/+/HEAD/docs/symbol_files.md#records-4):
> >
> > > If a given address is covered by both a PUBLIC record and a FUNC record,
> > > the processor uses the FUNC data.
> >
> It's expected that the tests verifying symtab contents need updating after
> you remove some things from it. It's also possible some other tests will need
> minor tweaks (like the one in `line-table.test:54`) because of small
> differences in output format.
>
> Whether this is a reasonable change cannot be judged by failing tests alone.
> You also need to evaluate the overall quality of the debugger output. That
> will have to be a judgement call, but I'm hoping it won't be a hard one. For
> example, the change in line-table.test was definitely for the better.
>
> >> If a given address is covered by both a PUBLIC record and a FUNC record,
> >> the processor uses the FUNC data.
>
> And if an address is covered both by a Symtab Symbol, and an SymbolFile
> Function, lldb will preferentially (in backtraces, for instance) display
> information from the Function, so I think (hope) that this is going to work
> exactly as desired.
These two commands `image lookup -n ...` and `image show-unwind -n ..` also
failed to give any information if the name is from FUNC records.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D113163/new/
https://reviews.llvm.org/D113163
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