Use second version of patch for test 8 segfault

fmt_test8_segfault.patch

@@ -1,23 +1,38 @@
-From 6655e804c49f66b6c978fcdd01ef6b03b55208fa Mon Sep 17 00:00:00 2001
+From 032c83807f95d83f2355f1c436909bb577b920bc Mon Sep 17 00:00:00 2001
 From: Victor Zverovich <victor.zverovich@gmail.com>
-Date: Sun, 6 Aug 2017 20:18:04 -0700
+Date: Thu, 10 Aug 2017 09:27:06 -0700
-Subject: [PATCH] Fix a segfault in test on glibc 2.26 #551
+Subject: [PATCH] Fix a segfault in test on glibc 2.26 #551, take 2
 NOTE: Added ::internal so it would apply - DLJ
 
 ---
- test/util-test.cc | 2 +-
+ test/util-test.cc | 17 +++++++++++++++--
- 1 file changed, 1 insertion(+), 1 deletion(-)
+ 1 file changed, 15 insertions(+), 2 deletions(-)
 
 diff --git a/test/util-test.cc b/test/util-test.cc
-index a3882558..6cef7e81 100644
+index 6cef7e81..6617b857 100644
 --- a/test/util-test.cc
 +++ b/test/util-test.cc
-@@ -838,7 +838,7 @@ TEST(UtilTest, FormatSystemError) {
+@@ -837,8 +837,21 @@ TEST(UtilTest, FormatSystemError) {
+   fmt::internal::format_system_error(message, EDOM, "test");
    EXPECT_EQ(fmt::format("test: {}", get_system_error(EDOM)), message.str());
    message.clear();
-   fmt::internal::format_system_error(
+-  fmt::internal::format_system_error(
 -        message, EDOM, fmt::StringRef(0, std::numeric_limits<size_t>::max()));
-+        message, EDOM, fmt::StringRef(0, std::numeric_limits<ssize_t>::max()));
++
++  // Check if std::allocator throws on allocating max size_t / 2 chars.
++  size_t max_size = std::numeric_limits<size_t>::max() / 2;
++  bool throws_on_alloc = false;
++  try {
++    std::allocator<char> alloc;
++    alloc.deallocate(alloc.allocate(max_size), max_size);
++  } catch (std::bad_alloc) {
++    throws_on_alloc = true;
++  }
++  if (!throws_on_alloc) {
++    fmt::print("warning: std::allocator allocates {} chars", max_size);
++    return;
++  }
++  fmt::internal::format_system_error(message, EDOM, fmt::StringRef(0, max_size));
    EXPECT_EQ(fmt::format("error {}", EDOM), message.str());
  }