Dimitry Andric <[email protected]> writes:

> Commit r16-5592-g56889bfec25 added saving and restoring of CXXFLAGS and
> LDFLAGS in the gcc configure script, to avoid including the wrong zstd
> headers.
>
> However, due to misleading indentation in the configure script, the
> restoration of CXXFLAGS and LDFLAGS was put after the if block where the
> values were saved. This could cause various interesting effects, among
> others segfaults while building gcc in the FreeBSD ports system.
>
> Move the restoration of CXXFLAGS and LDFLAGS to just before the end of
> the same if block to fix this.
>
> Thanks to Mark Millard for spotting the actual mistake.

LGTM (obvious).

>
> 2026-02-10  Dimitry Andric  <[email protected]>
>
>       gcc:
>       PR libfortran/123366
>       * configure.ac: Move restoring of CXXFLAGS/LDFLAGS for zstd test to
>       the correct place.
>       * configure: Regenerate.
>
> Signed-off-by: Dimitry Andric <[email protected]>
> ---
>  gcc/configure    | 2 +-
>  gcc/configure.ac | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/gcc/configure b/gcc/configure
> index bad73081a9b..100e6e10012 100755
> --- a/gcc/configure
> +++ b/gcc/configure
> @@ -10661,10 +10661,10 @@ $as_echo "#define HAVE_ZSTD_H 1" >>confdefs.h
>  elif test "x$with_zstd" != x; then
>      as_fn_error $? "Unable to find zstd.h.  See config.log for details." 
> "$LINENO" 5
>  fi
> -fi
>  
>  CXXFLAGS="$saved_CXXFLAGS"
>  LDFLAGS="$saved_LDFLAGS"
> +fi
>  
>  
>  
> diff --git a/gcc/configure.ac b/gcc/configure.ac
> index 7eb86146a10..35af1382cf1 100644
> --- a/gcc/configure.ac
> +++ b/gcc/configure.ac
> @@ -1565,10 +1565,10 @@ if test $gcc_cv_header_zstd_h = yes; then
>  elif test "x$with_zstd" != x; then
>      as_fn_error $? "Unable to find zstd.h.  See config.log for details." 
> "$LINENO" 5
>  fi
> -fi
>  
>  CXXFLAGS="$saved_CXXFLAGS"
>  LDFLAGS="$saved_LDFLAGS"
> +fi
>  
>  dnl Disabled until we have a complete test for buggy enum bitfields.
>  dnl gcc_AC_C_ENUM_BF_UNSIGNED

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