RE: [RFA] patch for DW_AT_comp_dir/DW_AT_name vs .debug_line inco nsistencies

Aleksandar Ristovski
2008-01-08T21:51:32Z

> I do not see how the text you quoted has any bearing on this
> situation.

Daniel, let me recap:

My gcc 3.3.5 output:
DW_AT_name :
c:/QNXTau/eclipse/ide-4.5-workspace/testManagedCC/main.cc
DW_AT_comp_dir :
c:/QNXTau/eclipse/ide-4.5-workspace/testManagedCC/Debug
...
The Directory Table:
..

The File Name Table:
Entry Dir Time Size Name
1 1 0 0 main.cc

My gcc 4.2.1 output:
DW_AT_name : ..\main.cc
DW_AT_comp_dir :
C:\QNXTau\eclipse\ide-4.5-workspace\testManagedCC\Debug
...
The Directory Table is empty.

The File Name Table:
Entry Dir Time Size Name
1 0 0 0 ..\main.cc

Following the spec, I conclude that

1. case 3.3.5:
DW_AT_name is correct, according to point 2 of quoted document.
DW_AT_comp_dir is correct, according to point 6 of the quoted text.
File table in debug_line section is correct (according to the spec) as it
specifies files relative to DW_AT_comp_dir.

2. case 4.2.1:
DW_AT_name is correct, according to point 2 of quoted document.
DW_AT_comp_dir is also correct and
file table in debug_line seems to be correct too.

You suggested that output from case 3.3.5 was a bug and should not occur (I
thought your statement: "The compiler should never do this. I still say
that this is a bug in the compiler. " was referring to this situation,
apologies if I misinterpreted what you said).

Does it make sense now?

Thanks,

Aleksandar