commit b5f97ee
Author: Rafael Ávila de Espíndola <respindola@mozilla.com>
Date:   Mon Aug 20 10:28:08 2012 -0400

    Bug 783505 - OS X gcc builds failing. r=jorendorff.
    This patch adds a workaround for
    http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39608
---
 js/src/jstypedarray.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git js/src/jstypedarray.cpp js/src/jstypedarray.cpp
index 1eaeea0..1957086 100644
--- js/src/jstypedarray.cpp
+++ js/src/jstypedarray.cpp
@@ -1423,8 +1423,14 @@ class TypedArrayTemplate
     Getter(JSContext *cx, unsigned argc, Value *vp)
     {
         CallArgs args = CallArgsFromVp(argc, vp);
+        // FIXME: Hack to keep us building with gcc 4.2. Remove this once we
+        // drop support for gcc 4.2. See bug 783505 for the details.
+#if !defined(__clang__) && defined(__GNUC__) && __GNUC_MINOR__ <= 2
+        return CallNonGenericMethod(cx, IsThisClass, GetterImpl<ValueGetter>, args);
+#else
         return CallNonGenericMethod<ThisTypeArray::IsThisClass,
                                     ThisTypeArray::GetterImpl<ValueGetter> >(cx, args);
+#endif
     }
 
     // Define an accessor for a read-only property that invokes a native getter
--- build/autoconf/gcc-pr39608.m4~
+++ build/autoconf/gcc-pr39608.m4
@@ -31,7 +31,6 @@ AC_LANG_RESTORE
 
 AC_MSG_RESULT($ac_have_gcc_pr39608)
 if test "$ac_have_gcc_pr39608" = "yes"; then
-   echo This compiler would fail to build firefox, plase upgrade.
-   exit 1
+   echo This compiler may fail to build firefox, plase upgrade.
 fi
 ])
--- js/src/build/autoconf/gcc-pr39608.m4~
+++ js/src/build/autoconf/gcc-pr39608.m4
@@ -31,7 +31,6 @@ AC_LANG_RESTORE
 
 AC_MSG_RESULT($ac_have_gcc_pr39608)
 if test "$ac_have_gcc_pr39608" = "yes"; then
-   echo This compiler would fail to build firefox, plase upgrade.
-   exit 1
+   echo This compiler may fail to build firefox, plase upgrade.
 fi
 ])