https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109489
Bug ID: 109489
Summary: [ubsan] Support -fsanitize-trap=
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: i at maskray dot me
Target Milestone: ---
Clang has supported -fsanitize-trap=undefined and many fine-grained options[1]
e.g. -fsanitize-trap=alignment since 2015.
-fsanitize-undefined-trap-on-error is a deprecated alias for
-fsanitize-trap=undefined in Clang. -fsanitize-trap= provides fine-grained
control over putting specific checks into the trap mode, and it provides a
unified interface with -fsanitize= and -fsanitize-recover=.
As an example, -fsanitize=undefined in the normal mode may increase the binary
size a lot.
The user may put some checks into the trap mode while keeping the rest in the
normal mode (-fsanitize-trap=alignment,null) to make the binary smaller.
[1]: https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html
