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The qualifier allows programmer to directly control how pointers are signed when they are stored in a particular variable. The qualifier takes three arguments: the signing key, a flag specifying whether address discrimination should be used, and a non-negative integer that is used for additional discrimination. ``` typedef void (*my_callback)(const void*); my_callback __ptrauth(ptrauth_key_process_dependent_code, 1, 0xe27a) callback; ``` Co-Authored-By: John McCall rjmccall@apple.com
13 lines
552 B
C++
13 lines
552 B
C++
// RUN: %clang_cc1 -std=c++11 -fptrauth-intrinsics -fptrauth-calls -emit-llvm -o - -triple=arm64-apple-ios %s | FileCheck %s
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// RUN: %clang_cc1 -std=c++11 -fptrauth-intrinsics -fptrauth-calls -emit-llvm -o - -triple=aarch64-linux-gnu %s | FileCheck %s
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// CHECK: define {{.*}}void @_Z3fooPU9__ptrauthILj3ELb1ELj234EEPi(
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void foo(int * __ptrauth(3, 1, 234) *) {}
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template <class T>
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void foo(T t) {}
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// CHECK: define weak_odr void @_Z3fooIPU9__ptrauthILj1ELb0ELj64EEPiEvT_(
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template void foo<int * __ptrauth(1, 0, 64) *>(int * __ptrauth(1, 0, 64) *);
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