diff options
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 6eeb3d9..c2eb373 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -62,6 +62,7 @@ along with GCC; see the file COPYING3. If not see #include "value-prof.h" #include "diagnostic-core.h" #include "builtins.h" +#include "asan.h" #include "ubsan.h" #include "cilk.h" @@ -5765,6 +5766,14 @@ expand_builtin (tree exp, rtx target, rtx subtarget, enum machine_mode mode, enum machine_mode target_mode = TYPE_MODE (TREE_TYPE (exp)); int flags; + /* When ASan is enabled, we don't want to expand some memory/string + builtins and rely on libsanitizer's hooks. This allows us to avoid + redundant checks and be sure, that possible overflow will be detected + by ASan. */ + + if ((flag_sanitize & SANITIZE_ADDRESS) && asan_intercepted_p (fcode)) + return expand_call (exp, target, ignore); + if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD) return targetm.expand_builtin (exp, target, subtarget, mode, ignore); |