add some bits of the commit log into the code comments

diff --git a/src/kernel/context/Context.hpp b/src/kernel/context/Context.hpp
index 89b3833..c5a459a 100644 (file)
--- a/src/kernel/context/Context.hpp
+++ b/src/kernel/context/Context.hpp
@@ -158,7 +158,7 @@ XBT_PUBLIC_DATA(char sigsegv_stack[SIGSTKSZ]);
 
 /* We are using the bottom of the stack to save some information, like the
  * valgrind_stack_id. Define smx_context_usable_stack_size to give the remaining
 
 /* We are using the bottom of the stack to save some information, like the
  * valgrind_stack_id. Define smx_context_usable_stack_size to give the remaining

- * size for the stack. Round its value to a multiple of 16 (for stack alignment). */
+ * size for the stack. Round its value to a multiple of 16 (asan wants the stacks to be aligned this way). */

 #if HAVE_VALGRIND_H
 #define smx_context_usable_stack_size                                                                                  \
   ((smx_context_stack_size - sizeof(unsigned int)) & ~0xf) /* for valgrind_stack_id */
 #if HAVE_VALGRIND_H
 #define smx_context_usable_stack_size                                                                                  \
   ((smx_context_stack_size - sizeof(unsigned int)) & ~0xf) /* for valgrind_stack_id */