Erik Pilkington 9c3b588db9 Add a new builtin: __builtin_dynamic_object_size ... This builtin has the same UI as __builtin_object_size, but has the potential to be evaluated dynamically. It is meant to be used as a drop-in replacement for libraries that use __builtin_object_size when a dynamic checking mode is enabled. For instance, __builtin_object_size fails to provide any extra checking in the following function: void f(size_t alloc) { char* p = malloc(alloc); strcpy(p, "foobar"); // expands to __builtin___strcpy_chk(p, "foobar", __builtin_object_size(p, 0)) } This is an overflow if alloc < 7, but because LLVM can't fold the object size intrinsic statically, it folds __builtin_object_size to -1. With __builtin_dynamic_object_size, alloc is passed through to __builtin___strcpy_chk. rdar://32212419 Differential revision: https://reviews.llvm.org/D56760 llvm-svn: 352665		2019-01-30 20:34:53 +00:00
..
clang	Add a new builtin: __builtin_dynamic_object_size	2019-01-30 20:34:53 +00:00
clang-c	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
CMakeLists.txt	…