commit d54bb9b1d3fd25779fba2c403003c5097ba9af73

Author: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>

Date:   Mon Jun 26 09:55:41 2017 -0300

    Prevent an implicit int promotion in malloc/tst-alloc_buffer.c

    According to ISO C11, section 6.5.3.3 "Unary arithmetic operators", the

    result of the ~ operator is the bitwise complement of its (promoted)

    operand.

    This can lead to a comparison of a char with another integer type.

    Tested on powerpc, powerpc64 and powerpc64le.

            * malloc/tst-alloc_buffer.c (test_misaligned): Cast to char

            before comparing with another char.

diff --git a/malloc/tst-alloc_buffer.c b/malloc/tst-alloc_buffer.c

index 1c143999c70180f7..9b2bd2046a12c0f2 100644

--- a/malloc/tst-alloc_buffer.c

+++ b/malloc/tst-alloc_buffer.c

@@ -429,7 +429,7 @@ test_misaligned (char pad)

   }

   /* Verify that padding was not overwritten.  */

-  TEST_VERIFY (backing[0] == ~pad);

+  TEST_VERIFY (backing[0] == (char) ~pad);

   TEST_VERIFY (backing[SIZE + 1] == pad);

   free (backing);

 }