ac73b73c16
Since C++11, the C++ standard has a forward progress guarantee [intro.progress], so all such functions must have the `mustprogress` requirement. In addition, from C11 and onwards, loops without a non-zero constant conditional or no conditional are also required to make progress (C11 6.8.5p6). This patch implements these attribute deductions so they can be used by the optimization passes. Differential Revision: https://reviews.llvm.org/D86841
155 lines
6.8 KiB
C++
155 lines
6.8 KiB
C++
int DefinedInDifferentFile(int *a);
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// RUN: echo "int DefinedInDifferentFile(int *a) { return *a; }" > %t.extra-source.cpp
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// RUN: echo "struct S { S(){} ~S(){} };" >> %t.extra-source.cpp
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// RUN: echo "S glob_array[5];" >> %t.extra-source.cpp
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin -disable-O0-optnone -emit-llvm -o - %s -include %t.extra-source.cpp | FileCheck -check-prefix=WITHOUT %s
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin -disable-O0-optnone -emit-llvm -o - %s -include %t.extra-source.cpp -fsanitize=address | FileCheck -check-prefix=ASAN %s
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// RUN: echo "fun:*BlacklistedFunction*" > %t.func.blacklist
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin -disable-O0-optnone -emit-llvm -o - %s -include %t.extra-source.cpp -fsanitize=address -fsanitize-blacklist=%t.func.blacklist | FileCheck -check-prefix=BLFUNC %s
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// The blacklist file uses regexps, so escape backslashes, which are common in
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// Windows paths.
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// RUN: echo "src:%s" | sed -e 's/\\/\\\\/g' > %t.file.blacklist
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-apple-darwin -disable-O0-optnone -emit-llvm -o - %s -include %t.extra-source.cpp -fsanitize=address -fsanitize-blacklist=%t.file.blacklist | FileCheck -check-prefix=BLFILE %s
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// The sanitize_address attribute should be attached to functions
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// when AddressSanitizer is enabled, unless no_sanitize_address attribute
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// is present.
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// Attributes for function defined in different source file:
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// WITHOUT: DefinedInDifferentFile{{.*}} [[NOATTR:#[0-9]+]]
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// BLFILE: DefinedInDifferentFile{{.*}} [[WITH:#[0-9]+]]
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// BLFUNC: DefinedInDifferentFile{{.*}} [[WITH:#[0-9]+]]
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// ASAN: DefinedInDifferentFile{{.*}} [[WITH:#[0-9]+]]
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// Check that functions generated for global in different source file are
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// not blacklisted.
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// WITHOUT: @__cxx_global_var_init{{.*}}[[NOATTR:#[0-9]+]]
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// WITHOUT: @__cxx_global_array_dtor{{.*}}[[NOATTR]]
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// BLFILE: @__cxx_global_var_init{{.*}}[[WITH:#[0-9]+]]
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// BLFILE: @__cxx_global_array_dtor{{.*}}[[WITH]]
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// BLFUNC: @__cxx_global_var_init{{.*}}[[WITH:#[0-9]+]]
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// BLFUNC: @__cxx_global_array_dtor{{.*}}[[WITH]]
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// ASAN: @__cxx_global_var_init{{.*}}[[WITH:#[0-9]+]]
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// ASAN: @__cxx_global_array_dtor{{.*}}[[WITH]]
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// WITHOUT: NoAddressSafety1{{.*}}) [[NOATTR:#[0-9]+]]
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// BLFILE: NoAddressSafety1{{.*}}) [[NOATTR:#[0-9]+]]
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// BLFUNC: NoAddressSafety1{{.*}}) [[NOATTR:#[0-9]+]]
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// ASAN: NoAddressSafety1{{.*}}) [[NOATTR:#[0-9]+]]
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__attribute__((no_sanitize_address))
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int NoAddressSafety1(int *a) { return *a; }
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// WITHOUT: NoAddressSafety2{{.*}}) [[NOATTR]]
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// BLFILE: NoAddressSafety2{{.*}}) [[NOATTR]]
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// BLFUNC: NoAddressSafety2{{.*}}) [[NOATTR]]
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// ASAN: NoAddressSafety2{{.*}}) [[NOATTR]]
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__attribute__((no_sanitize_address))
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int NoAddressSafety2(int *a);
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int NoAddressSafety2(int *a) { return *a; }
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// WITHOUT: NoAddressSafety3{{.*}}) [[NOATTR]]
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// BLFILE: NoAddressSafety3{{.*}}) [[NOATTR]]
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// BLFUNC: NoAddressSafety3{{.*}}) [[NOATTR]]
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// ASAN: NoAddressSafety3{{.*}}) [[NOATTR]]
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[[gnu::no_sanitize_address]]
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int NoAddressSafety3(int *a) { return *a; }
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// WITHOUT: NoAddressSafety4{{.*}}) [[NOATTR]]
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// BLFILE: NoAddressSafety4{{.*}}) [[NOATTR]]
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// BLFUNC: NoAddressSafety4{{.*}}) [[NOATTR]]
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// ASAN: NoAddressSafety4{{.*}}) [[NOATTR]]
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[[gnu::no_sanitize_address]]
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int NoAddressSafety4(int *a);
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int NoAddressSafety4(int *a) { return *a; }
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// WITHOUT: NoAddressSafety5{{.*}}) [[NOATTR]]
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// BLFILE: NoAddressSafety5{{.*}}) [[NOATTR]]
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// BLFUNC: NoAddressSafety5{{.*}}) [[NOATTR]]
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// ASAN: NoAddressSafety5{{.*}}) [[NOATTR]]
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__attribute__((no_sanitize("address")))
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int NoAddressSafety5(int *a) { return *a; }
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// WITHOUT: NoAddressSafety6{{.*}}) [[NOATTR]]
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// BLFILE: NoAddressSafety6{{.*}}) [[NOATTR]]
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// BLFUNC: NoAddressSafety6{{.*}}) [[NOATTR]]
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// ASAN: NoAddressSafety6{{.*}}) [[NOATTR]]
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__attribute__((no_sanitize("address")))
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int NoAddressSafety6(int *a);
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int NoAddressSafety6(int *a) { return *a; }
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// WITHOUT: AddressSafetyOk{{.*}}) [[NOATTR]]
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// BLFILE: AddressSafetyOk{{.*}}) [[NOATTR]]
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// BLFUNC: AddressSafetyOk{{.*}}) [[WITH:#[0-9]+]]
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// ASAN: AddressSafetyOk{{.*}}) [[WITH:#[0-9]+]]
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int AddressSafetyOk(int *a) { return *a; }
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// WITHOUT: BlacklistedFunction{{.*}}) [[NOATTR]]
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// BLFILE: BlacklistedFunction{{.*}}) [[NOATTR]]
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// BLFUNC: BlacklistedFunction{{.*}}) [[NOATTR]]
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// ASAN: BlacklistedFunction{{.*}}) [[WITH]]
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int BlacklistedFunction(int *a) { return *a; }
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#define GENERATE_FUNC(name) \
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int name(int *a) { return *a; }
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// WITHOUT: GeneratedFunction{{.*}}) [[NOATTR]]
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// BLFILE: GeneratedFunction{{.*}}) [[NOATTR]]
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// BLFUNC: GeneratedFunction{{.*}}) [[WITH]]
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// ASAN: GeneratedFunction{{.*}}) [[WITH]]
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GENERATE_FUNC(GeneratedFunction)
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#define GENERATE_NAME(name) name##_generated
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// WITHOUT: Function_generated{{.*}}) [[NOATTR]]
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// BLFILE: Function_generated{{.*}}) [[NOATTR]]
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// BLFUNC: Function_generated{{.*}}) [[WITH]]
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// ASAN: Function_generated{{.*}}) [[WITH]]
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int GENERATE_NAME(Function)(int *a) { return *a; }
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// WITHOUT: TemplateAddressSafetyOk{{.*}}) [[NOATTR]]
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// BLFILE: TemplateAddressSafetyOk{{.*}}) [[NOATTR]]
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// BLFUNC: TemplateAddressSafetyOk{{.*}}) [[WITH]]
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// ASAN: TemplateAddressSafetyOk{{.*}}) [[WITH]]
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template<int i>
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int TemplateAddressSafetyOk() { return i; }
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// WITHOUT: TemplateNoAddressSafety1{{.*}}) [[NOATTR]]
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// BLFILE: TemplateNoAddressSafety1{{.*}}) [[NOATTR]]
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// BLFUNC: TemplateNoAddressSafety1{{.*}}) [[NOATTR]]
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// ASAN: TemplateNoAddressSafety1{{.*}}) [[NOATTR]]
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template<int i>
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__attribute__((no_sanitize_address))
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int TemplateNoAddressSafety1() { return i; }
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// WITHOUT: TemplateNoAddressSafety2{{.*}}) [[NOATTR]]
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// BLFILE: TemplateNoAddressSafety2{{.*}}) [[NOATTR]]
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// BLFUNC: TemplateNoAddressSafety2{{.*}}) [[NOATTR]]
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// ASAN: TemplateNoAddressSafety2{{.*}}) [[NOATTR]]
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template<int i>
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__attribute__((no_sanitize("address")))
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int TemplateNoAddressSafety2() { return i; }
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int force_instance = TemplateAddressSafetyOk<42>()
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+ TemplateNoAddressSafety1<42>()
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+ TemplateNoAddressSafety2<42>();
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// Check that __cxx_global_var_init* get the sanitize_address attribute.
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int global1 = 0;
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int global2 = *(int*)((char*)&global1+1);
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// WITHOUT: @__cxx_global_var_init{{.*}}[[NOATTR:#[0-9]+]]
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// BLFILE: @__cxx_global_var_init{{.*}}[[NOATTR:#[0-9]+]]
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// BLFUNC: @__cxx_global_var_init{{.*}}[[WITH:#[0-9]+]]
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// ASAN: @__cxx_global_var_init{{.*}}[[WITH:#[0-9]+]]
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// WITHOUT: attributes [[NOATTR]] = { noinline nounwind{{.*}} }
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// BLFILE: attributes [[WITH]] = { noinline nounwind sanitize_address{{.*}} }
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// BLFILE: attributes [[NOATTR]] = { noinline nounwind{{.*}} }
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// BLFUNC: attributes [[WITH]] = { noinline nounwind sanitize_address{{.*}} }
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// BLFUNC: attributes [[NOATTR]] = { noinline nounwind{{.*}} }
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// ASAN: attributes [[WITH]] = { noinline nounwind sanitize_address{{.*}} }
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// ASAN: attributes [[NOATTR]] = { noinline nounwind{{.*}} }
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