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Re: debug/5271: Wrong line number information.
- From: Carlo Wood <carlo at alinoe dot com>
- To: nobody at gcc dot gnu dot org
- Cc: gcc-prs at gcc dot gnu dot org,
- Date: 4 Jan 2002 04:06:01 -0000
- Subject: Re: debug/5271: Wrong line number information.
- Reply-to: Carlo Wood <carlo at alinoe dot com>
The following reply was made to PR debug/5271; it has been noted by GNATS.
From: Carlo Wood <carlo@alinoe.com>
To: gcc-gnats@gcc.gnu.org
Cc: gcc-bugs@gcc.gnu.org
Subject: Re: debug/5271: Wrong line number information.
Date: Fri, 4 Jan 2002 05:03:20 +0100
How-To-Repeat:
Call the following preprocessed file "bug.ii"
# 14 "libcwd.tst/leak.cc"
# 206 "../include/libcw/macro_AllocTag.h"
__inline__
int
foo(int i)
{
i += 1234;
return i;
};
# 19 "libcwd.tst/leak.cc"
int main(void)
{
int t = foo(*new int);
return t;
}
Next compile this file with a command like:
~/c++/libcw/src/libcwd/testsuite>/usr/local/gcc-3.0.3/lib/gcc-lib/i686-pc-linux-gnu/3.0.3/cc1plus -fpreprocessed bug.ii -quiet -dumpbase leak.cc -gdwarf-2 -O -version -o bug.s
GNU CPP version 3.0.3 (cpplib) (i386 Linux/ELF)
GNU C++ version 3.0.3 (i686-pc-linux-gnu)
compiled by GNU C version 3.0.3.
This will result in a file bug.s that shows that
the line number information is such that the call
to 'new int' appears to be made in macro_AllocTag.h
while obviously it is done in main() in leak.cc.
main:
.LFB1:
.file 2 "libcwd.tst/leak.cc"
.loc 2 21 0
pushl %ebp
.LCFI0:
movl %esp, %ebp
.LCFI1:
subl $8, %esp
.LCFI2:
andl $-16, %esp
.LBB2:
.loc 2 22 0
.file 3 "../include/libcw/macro_AllocTag.h"
.loc 3 209 0
.LBB3:
subl $12, %esp
pushl $4
.LCFI3:
call _Znwj
addl $16, %esp
.loc 3 210 0
movl (%eax), %eax
addl $1234, %eax
.LBE3:
.loc 2 23 0
.LBE2:
.loc 2 24 0
movl %ebp, %esp
popl %ebp
ret
Clearly, the line ".loc 3 209 0" should not be there.
--
Carlo Wood <carlo@alinoe.com>