87 lines
3.1 KiB
C++
87 lines
3.1 KiB
C++
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// RUN: %check_clang_tidy %s llvmlibc-callee-namespace %t
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#define OTHER_MACRO_NAMESPACE custom_namespace
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namespace OTHER_MACRO_NAMESPACE {
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void wrong_name_macro_func() {}
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}
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namespace __llvm_libc {
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void right_name_no_macro_func() {}
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}
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#define LIBC_NAMESPACE __llvm_libc_xyz
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namespace LIBC_NAMESPACE {
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namespace nested {
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void nested_func() {}
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} // namespace nested
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void libc_api_func() {}
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struct libc_api_struct {
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int operator()() const { return 0; }
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};
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} // namespace __llvm_libc
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// Emulate a function from the public headers like string.h
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void libc_api_func() {}
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// Emulate a function specifically allowed by the exception list.
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void malloc() {}
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// Emulate a non-trivially named symbol.
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struct global_struct {
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int operator()() const { return 0; }
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};
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namespace LIBC_NAMESPACE {
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void Test() {
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// Allow calls with the fully qualified name.
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LIBC_NAMESPACE::libc_api_func();
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LIBC_NAMESPACE::nested::nested_func();
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void (*qualifiedPtr)(void) = LIBC_NAMESPACE::libc_api_func;
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qualifiedPtr();
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// Should not trigger on compiler provided function calls.
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(void)__builtin_abs(-1);
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// Bare calls are allowed as long as they resolve to the correct namespace.
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libc_api_func();
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nested::nested_func();
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void (*barePtr)(void) = LIBC_NAMESPACE::libc_api_func;
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barePtr();
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// Allow calling entities defined in the namespace.
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LIBC_NAMESPACE::libc_api_struct{}();
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// Disallow calling into global namespace for implemented entrypoints.
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::libc_api_func();
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: 'libc_api_func' must resolve to a function declared within the namespace defined by the 'LIBC_NAMESPACE' macro
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// CHECK-MESSAGES: :25:6: note: resolves to this declaration
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// Disallow indirect references to functions in global namespace.
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void (*badPtr)(void) = ::libc_api_func;
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badPtr();
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// CHECK-MESSAGES: :[[@LINE-2]]:26: warning: 'libc_api_func' must resolve to a function declared within the namespace defined by the 'LIBC_NAMESPACE' macro
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// CHECK-MESSAGES: :25:6: note: resolves to this declaration
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// Allow calling into global namespace for specific functions.
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::malloc();
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// Disallow calling on entities that are not in the namespace, but make sure
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// no crashes happen.
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global_struct{}();
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// CHECK-MESSAGES: :[[@LINE-1]]:18: warning: 'operator()' must resolve to a function declared within the namespace defined by the 'LIBC_NAMESPACE' macro
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// CHECK-MESSAGES: :32:7: note: resolves to this declaration
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OTHER_MACRO_NAMESPACE::wrong_name_macro_func();
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: 'wrong_name_macro_func' must resolve to a function declared within the namespace defined by the 'LIBC_NAMESPACE' macro
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// CHECK-MESSAGES: :3:31: note: expanded from macro 'OTHER_MACRO_NAMESPACE'
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// CHECK-MESSAGES: :5:8: note: resolves to this declaration
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__llvm_libc::right_name_no_macro_func();
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: 'right_name_no_macro_func' must resolve to a function declared within the namespace defined by the 'LIBC_NAMESPACE' macro
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// CHECK-MESSAGES: :9:8: note: resolves to this declaration
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}
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} // namespace __llvm_libc
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