Add CHECK_HEAP_ALIGN to perform runtime alignment checks

Adds a much cheaper CHECK_HEAP_ALIGN option to do heap access
alignment checks.  Less extensive than SAFE_HEAP, but also much
cheaper.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/settings.js b/src/settings.js
index 308afddc..4d742060 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -128,6 +128,9 @@ var SAFE_HEAP = 0; // Check each write to the heap, for example, this will give
                    // that 3 is the option you usually want here.
 var SAFE_HEAP_LOG = 0; // Log out all SAFE_HEAP operations
 
+var CHECK_HEAP_ALIGN = 0; // Check heap accesses for alignment, but don't do as
+                          // near extensive (or slow) checks as SAFE_HEAP.
+
 var SAFE_DYNCALLS = 0; // Show stack traces on missing function pointer/virtual method calls
 
 var ASM_HEAP_LOG = 0; // Simple heap logging, like SAFE_HEAP_LOG but cheaper, and in asm.js