incomplete tree dump with flag -fdump-tree-all

incomplete tree dump with flag -fdump-tree-all

[Fengzhe Zhang]

Hi,

I found that the tree dump (xxx.c.t00.tu file) with -fdump-tree-all
flag is incomplete in gcc-4.1.2. And the tree-dump.c is not modified
for this bug up to 4.4.0.

When a function body contains a for-statement or if-statement, the
stmt-list will break, and the rest of the function body is lost.

I did some search and found an early discussion thread about
-fdump-tree-original-raw:
http://gcc.gnu.org/ml/gcc-bugs/2008-07/msg00695.html

I tried that patch and it didn't work for the "tu" dump. And I found
that the output with -fdump-tree-all-slim flag is the same as with
-fdump-tree-all flag.

How can I find the rest of the statements from the broken statement-list? Thx.

-Fengzhe

Re: incomplete tree dump with flag -fdump-tree-all

[Ian Lance Taylor]

Fengzhe Zhang <fengzhe.zhang@gmail.com> writes:

> I found that the tree dump (xxx.c.t00.tu file) with -fdump-tree-all
> flag is incomplete in gcc-4.1.2. And the tree-dump.c is not modified
> for this bug up to 4.4.0.
>
> When a function body contains a for-statement or if-statement, the
> stmt-list will break, and the rest of the function body is lost.
>
> I did some search and found an early discussion thread about
> -fdump-tree-original-raw:
> http://gcc.gnu.org/ml/gcc-bugs/2008-07/msg00695.html
>
> I tried that patch and it didn't work for the "tu" dump. And I found
> that the output with -fdump-tree-all-slim flag is the same as with
> -fdump-tree-all flag.
>
> How can I find the rest of the statements from the broken statement-list? Thx.

I think you will need to add code to gcc/cp/cxx-pretty-print.c and/or
gcc/cp/dump.c to handle IF_STMT and FOR_STMT (and WHILE_STMT and DO_STMT
too, I expect).  I haven't looked into it in detail, though.

Ian