[LLVMdev] [PATCH]: DwarfWriter fix

Argiris Kirtzidis akyrtzi at gmail.com
Mon Jun 16 23:32:47 PDT 2008

Anton Korobeynikov wrote:
> 2. It can be, that debug information emitted is not correct. This is
> known open problem.

The attached patch fixes the problem with the line information.

For the "AT_stmt_list" attribute of the compilation unit entry, DWARF-2 
specification says:

> A DW_AT_stmt_list attribute whose value is a reference to line number 
> information for
> this compilation unit.
> This information is placed in a separate object file section from the 
> debugging information
> entries themselves. The value of the statement list attribute is the 
> offset in the
> .debug_line section of the first byte of the line number information 
> for this compilation
> unit

DwarfWriter was using a label reference (instead of a section offset) 
and it was causing a problem because Windows treats
section offsets differently, by emitting the ".secrel32" directive.


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