buffer: put big buffer on heap, not stack

This fixes a segfault on my x86_64 wheezy box.

Signed-off-by: Sage Weil <sage@inktank.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/src/test/bufferlist.cc b/src/test/bufferlist.cc
index 6f8ba19d226..fe91fdf5937 100644
--- a/src/test/bufferlist.cc
+++ b/src/test/bufferlist.cc
@@ -1821,9 +1821,10 @@ TEST(BufferList, TestCopyAll) {
   bufferlist bl2;
   i.copy_all(bl2);
   ASSERT_EQ(bl2.length(), BIG_SZ);
-  unsigned char big2[BIG_SZ];
-  bl2.copy(0, BIG_SZ, (char*)big2);
-  ASSERT_EQ(memcmp(big.get(), big2, BIG_SZ), 0);
+  std::tr1::shared_ptr <unsigned char> big2(
+      (unsigned char*)malloc(BIG_SZ), free);
+  bl2.copy(0, BIG_SZ, (char*)big2.get());
+  ASSERT_EQ(memcmp(big.get(), big2.get(), BIG_SZ), 0);
 }
 
 TEST(BufferHash, all) {