| // Test to demonstrate that functions compiled with synchronous unwind tables |
| // are ignored by the PointerAuthCFIAnalyzer. |
| // Exception handling is needed to have _any_ unwind tables, otherwise the |
| // PointerAuthCFIAnalyzer does not run on these functions, so it does not ignore |
| // any function. |
| // |
| // REQUIRES: system-linux,bolt-runtime |
| // |
| // RUN: %clangxx --target=aarch64-unknown-linux-gnu \ |
| // RUN: -mbranch-protection=pac-ret \ |
| // RUN: -fno-asynchronous-unwind-tables \ |
| // RUN: %s -o %t.exe -Wl,-q |
| // RUN: llvm-bolt %t.exe -o %t.bolt | FileCheck %s --check-prefix=CHECK |
| |
| // Number of functions with .cfi-negate-ra-state in the binary is |
| // platform-dependent. |
| // CHECK: BOLT-INFO: PointerAuthCFIAnalyzer ran on {{[0-9]+}} functions. |
| // CHECK-SAME: Ignored {{[0-9]}} functions ({{[0-9.]+}}%) because of CFI |
| // CHECK-SAME: inconsistencies |
| // CHECK-NEXT: BOLT-WARNING: PointerAuthCFIAnalyzer only supports |
| // CHECK-SAME: asynchronous unwind tables. For C compilers, see |
| // CHECK-SAME: -fasynchronous-unwind-tables. |
| |
| #include <cstdio> |
| #include <stdexcept> |
| |
| void foo() { throw std::runtime_error("Exception from foo()."); } |
| |
| int main() { |
| try { |
| foo(); |
| } catch (const std::exception &e) { |
| printf("Exception caught: %s\n", e.what()); |
| } |
| return 0; |
| } |
