BumpPtrAllocator: use uintptr_t when aligning addresses to avoid undefined behaviour

In theory, alignPtr() could push a pointer beyond the end of the current slab, making
comparisons with that pointer undefined behaviour. Use an integer type to avoid this.

llvm-svn: 216973

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/unittests/Support/AllocatorTest.cpp b/llvm/unittests/Support/AllocatorTest.cpp
index dc224925fdd..7789df5dc6f 100644
--- a/llvm/unittests/Support/AllocatorTest.cpp
+++ b/llvm/unittests/Support/AllocatorTest.cpp
@@ -130,7 +130,7 @@ public:
     void *MemBase = malloc(Size + Alignment - 1 + sizeof(void*));
 
     // Find the slab start.
-    void *Slab = alignPtr((char *)MemBase + sizeof(void *), Alignment);
+    void *Slab = (void *)alignAddr((char*)MemBase + sizeof(void *), Alignment);
 
     // Hold a pointer to the base so we can free the whole malloced block.
     ((void**)Slab)[-1] = MemBase;