| // RUN: %clangxx -DDETERMINE_UNIQUE %s -o %t-unique |
| // RUN: %clangxx -std=c++17 -fsanitize=function %s -O3 -g -DSHARED_LIB -fPIC -shared -o %t-so.so |
| // RUN: %clangxx -std=c++17 -fsanitize=function %s -O3 -g -o %t %t-so.so |
| // RUN: %run %t 2>&1 | FileCheck %s --check-prefix=CHECK $(%run %t-unique UNIQUE) |
| // Verify that we can disable symbolization if needed: |
| // RUN: %env_ubsan_opts=symbolize=0 %run %t 2>&1 | FileCheck %s --check-prefix=NOSYM $(%run %t-unique NOSYM-UNIQUE) |
| // XFAIL: windows-msvc |
| // Unsupported function flag |
| // UNSUPPORTED: openbsd |
| |
| #ifdef DETERMINE_UNIQUE |
| |
| #include <iostream> |
| |
| #include "../../../../../lib/sanitizer_common/sanitizer_platform.h" |
| |
| int main(int, char **argv) { |
| if (!SANITIZER_NON_UNIQUE_TYPEINFO) |
| std::cout << "--check-prefix=" << argv[1]; |
| } |
| |
| #else |
| |
| struct Shared {}; |
| using FnShared = void (*)(Shared *); |
| FnShared getShared(); |
| |
| struct __attribute__((visibility("hidden"))) Hidden {}; |
| using FnHidden = void (*)(Hidden *); |
| FnHidden getHidden(); |
| |
| namespace { |
| struct Private {}; |
| } // namespace |
| using FnPrivate = void (*)(void *); |
| FnPrivate getPrivate(); |
| |
| #ifdef SHARED_LIB |
| |
| void fnShared(Shared *) {} |
| FnShared getShared() { return fnShared; } |
| |
| void fnHidden(Hidden *) {} |
| FnHidden getHidden() { return fnHidden; } |
| |
| void fnPrivate(Private *) {} |
| FnPrivate getPrivate() { return reinterpret_cast<FnPrivate>(fnPrivate); } |
| |
| #else |
| |
| #include <stdint.h> |
| |
| void f() {} |
| |
| void g(int x) {} |
| |
| void make_valid_call() { |
| // CHECK-NOT: runtime error: call to function g |
| reinterpret_cast<void (*)(int)>(reinterpret_cast<uintptr_t>(g))(42); |
| } |
| |
| void make_invalid_call() { |
| // CHECK: function.cpp:[[@LINE+4]]:3: runtime error: call to function f() through pointer to incorrect function type 'void (*)(int)' |
| // CHECK-NEXT: function.cpp:[[@LINE-11]]: note: f() defined here |
| // NOSYM: function.cpp:[[@LINE+2]]:3: runtime error: call to function (unknown) through pointer to incorrect function type 'void (*)(int)' |
| // NOSYM-NEXT: ({{.*}}+0x{{.*}}): note: (unknown) defined here |
| reinterpret_cast<void (*)(int)>(reinterpret_cast<uintptr_t>(f))(42); |
| } |
| |
| void f1(int) {} |
| void f2(unsigned int) {} |
| void f3(int) noexcept {} |
| void f4(unsigned int) noexcept {} |
| |
| void check_noexcept_calls() { |
| void (*p1)(int); |
| p1 = &f1; |
| p1(0); |
| p1 = reinterpret_cast<void (*)(int)>(&f2); |
| // CHECK: function.cpp:[[@LINE+2]]:3: runtime error: call to function f2(unsigned int) through pointer to incorrect function type 'void (*)(int)' |
| // NOSYM: function.cpp:[[@LINE+1]]:3: runtime error: call to function (unknown) through pointer to incorrect function type 'void (*)(int)' |
| p1(0); |
| p1 = &f3; |
| p1(0); |
| p1 = reinterpret_cast<void (*)(int)>(&f4); |
| // CHECK: function.cpp:[[@LINE+2]]:3: runtime error: call to function f4(unsigned int) through pointer to incorrect function type 'void (*)(int)' |
| // NOSYM: function.cpp:[[@LINE+1]]:3: runtime error: call to function (unknown) through pointer to incorrect function type 'void (*)(int)' |
| p1(0); |
| |
| void (*p2)(int) noexcept; |
| p2 = reinterpret_cast<void (*)(int) noexcept>(&f1); |
| // TODO: Unclear whether calling a non-noexcept function through a pointer to |
| // nexcept function should cause an error. |
| // CHECK-NOT: function.cpp:[[@LINE+2]]:3: runtime error: call to function f1(int) through pointer to incorrect function type 'void (*)(int) noexcept' |
| // NOSYM-NOT: function.cpp:[[@LINE+1]]:3: runtime error: call to function (unknown) through pointer to incorrect function type 'void (*)(int) noexcept' |
| p2(0); |
| p2 = reinterpret_cast<void (*)(int) noexcept>(&f2); |
| // CHECK: function.cpp:[[@LINE+2]]:3: runtime error: call to function f2(unsigned int) through pointer to incorrect function type 'void (*)(int) noexcept' |
| // NOSYM: function.cpp:[[@LINE+1]]:3: runtime error: call to function (unknown) through pointer to incorrect function type 'void (*)(int) noexcept' |
| p2(0); |
| p2 = &f3; |
| p2(0); |
| p2 = reinterpret_cast<void (*)(int) noexcept>(&f4); |
| // CHECK: function.cpp:[[@LINE+2]]:3: runtime error: call to function f4(unsigned int) through pointer to incorrect function type 'void (*)(int) noexcept' |
| // NOSYM: function.cpp:[[@LINE+1]]:3: runtime error: call to function (unknown) through pointer to incorrect function type 'void (*)(int) noexcept' |
| p2(0); |
| } |
| |
| void check_cross_dso() { |
| getShared()(nullptr); |
| |
| // UNIQUE: function.cpp:[[@LINE+2]]:3: runtime error: call to function fnHidden(Hidden*) through pointer to incorrect function type 'void (*)(Hidden *)' |
| // NOSYM-UNIQUE: function.cpp:[[@LINE+1]]:3: runtime error: call to function (unknown) through pointer to incorrect function type 'void (*)(Hidden *)' |
| getHidden()(nullptr); |
| |
| // TODO: Unlike GCC, Clang fails to prefix the typeinfo name for the function |
| // type with "*", so this erroneously only fails for "*UNIQUE": |
| // UNIQUE: function.cpp:[[@LINE+2]]:3: runtime error: call to function fnPrivate((anonymous namespace)::Private*) through pointer to incorrect function type 'void (*)((anonymous namespace)::Private *)' |
| // NOSYM-UNIQUE: function.cpp:[[@LINE+1]]:3: runtime error: call to function (unknown) through pointer to incorrect function type 'void (*)((anonymous namespace)::Private *)' |
| reinterpret_cast<void (*)(Private *)>(getPrivate())(nullptr); |
| } |
| |
| int main(void) { |
| make_valid_call(); |
| make_invalid_call(); |
| check_noexcept_calls(); |
| check_cross_dso(); |
| // Check that no more errors will be printed. |
| // CHECK-NOT: runtime error: call to function |
| // NOSYM-NOT: runtime error: call to function |
| make_invalid_call(); |
| } |
| |
| #endif |
| |
| #endif |