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In-Reply-To: <20121129174220.GB31369@intel.com>
References: <20121129174220.GB31369@intel.com>
Date: Fri, 29 Nov 2013 21:56:00 -0000
Message-ID: <CAMe9rOrAehB+xasR3OsTOrpnoPjedNRNOw9rQo4LGaXgWfq1eA@mail.gmail.com>
Subject: Re: [PATCH] Put a breakpoint on __asan_report_error for ASAN
From: "H.J. Lu" <hjl.tools@gmail.com>
To: GCC Patches <gcc-patches@gcc.gnu.org>
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On Thu, Nov 29, 2012 at 9:42 AM, H.J. Lu <hongjiu.lu@intel.com> wrote:
> Hi,
>
> This patch puts a breakpoint on __asan_report_error if CFLAGS contains
> -fsanitize=address, similar to fancy_abort and internal_error.  OK to
> install?
>
>
> H.J.
> --
> 2012-11-24  H.J. Lu  <hongjiu.lu@intel.com>
>
>         * configure.ac: Append gdbasan.in to .gdbinit if CFLAGS contains
>         -fsanitize=address.
>         * configure: Regenerated.
>
>         * gdbasan.in: New file.
>
> diff --git a/gcc/configure b/gcc/configure
> index e2c119e..004910f 100755
> --- a/gcc/configure
> +++ b/gcc/configure
> @@ -27032,6 +27032,14 @@ if test "x$subdirs" != x; then
>  fi
>  echo "source ${srcdir}/gdbinit.in" >> .gdbinit
>
> +# Put a breakpoint on __asan_report_error to help with debugging buffer
> +# overflow.
> +case "$CFLAGS" in
> +*-fsanitize=address*)
> +  echo "source ${srcdir}/gdbasan.in" >> .gdbinit
> +  ;;
> +esac
> +
>  gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
>
>
> diff --git a/gcc/configure.ac b/gcc/configure.ac
> index c6f57bd..b9aaadb 100644
> --- a/gcc/configure.ac
> +++ b/gcc/configure.ac
> @@ -5017,6 +5017,14 @@ if test "x$subdirs" != x; then
>  fi
>  echo "source ${srcdir}/gdbinit.in" >> .gdbinit
>
> +# Put a breakpoint on __asan_report_error to help with debugging buffer
> +# overflow.
> +case "$CFLAGS" in
> +*-fsanitize=address*)
> +  echo "source ${srcdir}/gdbasan.in" >> .gdbinit
> +  ;;
> +esac
> +
>  gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
>  AC_SUBST(gcc_tooldir)
>  AC_SUBST(dollar)
> diff --git a/gcc/gdbasan.in b/gcc/gdbasan.in
> new file mode 100644
> index 0000000..cf05825
> --- /dev/null
> +++ b/gcc/gdbasan.in
> @@ -0,0 +1,3 @@
> +# Put a breakpoint on __asan_report_error to help with debugging buffer
> +# overflow.
> +b __asan_report_error
> --
> 1.7.11.7

Ping.


-- 
H.J.