"H.J. Lu" <hjl.tools@gmail.com> writes:

> When -fsanitize=address,undefined is used to build, the mmap configure
> check failed with

I think Paul fixed this in autoconf commit
09b6e78d1592ce10fdc975025d699ee41444aa3f, so we should add a comment
about that so we can clean this up in future.

>
> =================================================================
> ==231796==ERROR: LeakSanitizer: detected memory leaks
>
> Direct leak of 4096 byte(s) in 1 object(s) allocated from:
>     #0 0x7cdd3d0defdf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69
>     #1 0x5750c7f6d72b in main /home/alan/build/gas-san/all/bfd/conftest.c:239
>
> Direct leak of 4096 byte(s) in 1 object(s) allocated from:
>     #0 0x7cdd3d0defdf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69
>     #1 0x5750c7f6d2e1 in main /home/alan/build/gas-san/all/bfd/conftest.c:190
>
> SUMMARY: AddressSanitizer: 8192 byte(s) leaked in 2 allocation(s).
>
> Define GCC_AC_FUNC_MMAP with export ASAN_OPTIONS=detect_leaks=0 to avoid
> the sanitizer configure check failure.
>
> H.J. Lu (2):
>   mmap: Avoid the sanitizer configure check failure
>   mmap: Avoid the sanitizer configure check failure
>
>  bfd/Makefile.in          |  2 +-
>  bfd/aclocal.m4           |  1 +
>  bfd/configure            |  5 +++++
>  bfd/configure.ac         |  2 +-
>  binutils/Makefile.in     |  2 +-
>  binutils/aclocal.m4      |  1 +
>  binutils/configure       |  5 +++++
>  binutils/configure.ac    |  2 +-
>  config/mmap.m4           | 12 ++++++++++++
>  config/no-executables.m4 |  4 ++--
>  ld/Makefile.in           |  2 +-
>  ld/aclocal.m4            |  1 +
>  ld/configure             |  5 +++++
>  ld/configure.ac          |  2 +-
>  libctf/Makefile.in       |  2 +-
>  libctf/aclocal.m4        |  1 +
>  libctf/configure         |  5 +++++
>  libctf/configure.ac      |  2 +-
>  libiberty/Makefile.in    |  1 +
>  libiberty/acinclude.m4   |  2 +-
>  libiberty/aclocal.m4     |  1 +
>  libiberty/configure      |  5 +++++
>  libsframe/Makefile.in    |  1 +
>  libsframe/aclocal.m4     |  1 +
>  libsframe/configure      |  5 +++++
>  libsframe/configure.ac   |  2 +-
>  zlib/Makefile.in         |  2 +-
>  zlib/acinclude.m4        |  1 +
>  zlib/configure           |  7 -------
>  29 files changed, 64 insertions(+), 20 deletions(-)