The Tor Browser: build/autoconf/gcc-pr39608.m4@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 dnl This Source Code Form is subject to the terms of the Mozilla Public

     2 dnl License, v. 2.0. If a copy of the MPL was not distributed with this

     3 dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.

     5 dnl Check if the compiler is gcc and has pr39608. If so

     6 dnl disable vrp.

     8 AC_DEFUN([MOZ_GCC_PR39608],

9 [

    10 AC_MSG_CHECKING(for gcc pr39608)

    11 ac_have_gcc_pr39608="yes"

    12 AC_LANG_SAVE

    13 AC_LANG_CPLUSPLUS

    15 AC_TRY_COMPILE([

    16 typedef void (*FuncType)();

    17 template<FuncType Impl>

    18 void f();

    19 template<typename T> class C {

    20   typedef C<T> ThisC;

    21   template<int g()>

    22   static void h() {

    23     f<ThisC::h<g> >();

    24   }

    25 };

    26 ], true,

    27    ac_have_gcc_pr39608="no",

    28    true)

    30 AC_LANG_RESTORE

    32 AC_MSG_RESULT($ac_have_gcc_pr39608)

    33 if test "$ac_have_gcc_pr39608" = "yes"; then

    34    echo This compiler would fail to build firefox, please upgrade.

    35    exit 1

    36 fi

    37 ])

The Tor Browser / file revision

build/autoconf/gcc-pr39608.m4@97036ab72558

build/autoconf/gcc-pr39608.m4