https://bugs.llvm.org/show_bug.cgi?id=44096
Bug ID: 44096
Summary: Need a way to disable CFG on individual functions
Product: new-bugs
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected]
For certain functions, CFG should be disabled, for example a typical 32-bit
detour interceptor that calls into the second instruction of its hooked
function.
I believe the MSVC-ism for this is __declspec(guard(nocf)) but that isn't
implemented in clang-cl. I also tried __attribute__((nocf_check)) but got this
warning:
warning: 'nocf_check' attribute ignored; use -fcf-protection to enable the
attribute [-Wignored-attributes]
I could add -fcf-protection as the message suggests, but I'm not sure that's
the right solution.
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