forked from OSchip/llvm-project
276 lines
11 KiB
C++
276 lines
11 KiB
C++
// RUN: clang-tidy %s -checks="-*,cert-err58-cpp" -- -std=c++17 -target x86_64-pc-linux-gnu \
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// RUN: | FileCheck %s -check-prefix=CHECK-EXCEPTIONS \
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// RUN: -implicit-check-not="{{warning|error}}:"
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// RUN: clang-tidy %s -checks="-*,cert-err58-cpp" -- -DNONEXCEPTIONS -fno-exceptions -std=c++17 -target x86_64-pc-linux-gnu \
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// RUN: | FileCheck %s -allow-empty -check-prefix=CHECK-NONEXCEPTIONS \
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// RUN: -implicit-check-not="{{warning|error}}:"
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struct S {
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S() noexcept(false);
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};
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struct T {
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T() noexcept;
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};
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struct U {
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U() {}
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};
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struct V {
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explicit V(const char *) {} // Can throw
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};
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struct Cleanup {
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~Cleanup() {}
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};
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struct W {
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W(Cleanup c = {}) noexcept(false);
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};
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struct X {
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X(S = {}) noexcept;
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};
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struct Y {
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S s;
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};
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struct Z {
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T t;
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};
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int f();
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int g() noexcept(false);
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int h() noexcept(true);
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struct UserConv_Bad {
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operator int() noexcept(false);
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};
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struct UserConv_Good {
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operator int() noexcept;
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};
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UserConv_Bad some_bad_func() noexcept;
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UserConv_Good some_good_func() noexcept;
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S s;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 's' with static storage duration may throw an exception that cannot be caught [cert-err58-cpp]
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// CHECK-EXCEPTIONS: 9:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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T t; // ok
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U u;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 'u' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 17:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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V v("v");
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 'v' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 21:12: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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W w;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 'w' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 29:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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X x1(S{});
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 'x1' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 9:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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X x2;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 'x2' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 9:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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Y y;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 'y' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 36:8: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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Z z;
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int i = f();
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:5: warning: initialization of 'i' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 44:5: note: possibly throwing function declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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int j = g();
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:5: warning: initialization of 'j' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 45:5: note: possibly throwing function declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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int k = h();
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int l = some_bad_func();
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:5: warning: initialization of 'l' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 49:3: note: possibly throwing function declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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int m = some_good_func();
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typedef decltype(sizeof(int)) size_t;
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inline void *operator new(size_t sz, void *here) noexcept { return here; }
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char n[sizeof(int)];
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int *o = new (n) int();
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int *p = new int();
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:6: warning: initialization of 'p' with static storage duration may throw an exception that cannot be caught
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// CHECK-NONEXCEPTIONS-NOT: warning:
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thread_local S s3;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:16: warning: initialization of 's3' with thread_local storage duration may throw an exception that cannot be caught
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// CHECK-NONEXCEPTIONS-NOT: warning:
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thread_local T t3; // ok
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thread_local U u3;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:16: warning: initialization of 'u3' with thread_local storage duration may throw an exception that cannot be caught
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// CHECK-NONEXCEPTIONS-NOT: warning:
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thread_local V v3("v");
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:16: warning: initialization of 'v3' with thread_local storage duration may throw an exception that cannot be caught
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// CHECK-NONEXCEPTIONS-NOT: warning:
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thread_local W w3;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:16: warning: initialization of 'w3' with thread_local storage duration may throw an exception that cannot be caught
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// CHECK-NONEXCEPTIONS-NOT: warning:
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void f(S s1, T t1, U u1, V v1, W w1) { // ok, ok, ok, ok, ok
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S s2; // ok
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T t2; // ok
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U u2; // ok
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V v2("v"); // ok
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W w2; // ok
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thread_local S s3; // ok
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thread_local T t3; // ok
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thread_local U u3; // ok
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thread_local V v3("v"); // ok
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thread_local W w3; // ok
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static S s4; // ok
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static T t4; // ok
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static U u4; // ok
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static V v4("v"); // ok
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static W w4; // ok
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}
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namespace {
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S s;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 's' with static storage duration may throw an exception that cannot be caught [cert-err58-cpp]
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// CHECK-EXCEPTIONS: 9:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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T t; // ok
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U u;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 'u' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 17:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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V v("v");
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 'v' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 21:12: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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W w;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:3: warning: initialization of 'w' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 29:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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thread_local S s3;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:16: warning: initialization of 's3' with thread_local storage duration may throw an exception that cannot be caught
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// CHECK-NONEXCEPTIONS-NOT: warning:
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thread_local T t3; // ok
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thread_local U u3;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:16: warning: initialization of 'u3' with thread_local storage duration may throw an exception that cannot be caught
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// CHECK-NONEXCEPTIONS-NOT: warning:
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thread_local V v3("v");
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:16: warning: initialization of 'v3' with thread_local storage duration may throw an exception that cannot be caught
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// CHECK-NONEXCEPTIONS-NOT: warning:
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thread_local W w3;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:16: warning: initialization of 'w3' with thread_local storage duration may throw an exception that cannot be caught
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// CHECK-NONEXCEPTIONS-NOT: warning:
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}; // namespace
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class Statics {
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static S s; // warn when initialized
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static T t; // ok
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static U u; // warn when initialized
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static V v; // warn when initialized
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static W w; // warn when initialized
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void f(S s, T t, U u, V v) {
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S s2; // ok
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T t2; // ok
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U u2; // ok
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V v2("v"); // ok
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W w2; // ok
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thread_local S s3; // ok
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thread_local T t3; // ok
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thread_local U u3; // ok
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thread_local V v3("v"); // ok
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thread_local W w3; // ok
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static S s4; // ok
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static T t4; // ok
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static U u4; // ok
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static V v4("v"); // ok
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static W w4; // ok
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}
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};
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S Statics::s;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:12: warning: initialization of 's' with static storage duration may throw an exception that cannot be caught [cert-err58-cpp]
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// CHECK-EXCEPTIONS: 9:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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T Statics::t;
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U Statics::u;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:12: warning: initialization of 'u' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 17:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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V Statics::v("v");
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:12: warning: initialization of 'v' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 21:12: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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W Statics::w;
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:12: warning: initialization of 'w' with static storage duration may throw an exception that cannot be caught
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// CHECK-EXCEPTIONS: 29:3: note: possibly throwing constructor declared here
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// CHECK-NONEXCEPTIONS-NOT: warning:
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#ifndef NONEXCEPTIONS
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namespace pr35457 {
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constexpr int foo(int x) { if (x <= 0) throw 12; return x; }
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constexpr int bar = foo(1); // OK
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// CHECK-EXCEPTIONS-NOT: warning: initialization of 'bar' with static storage
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int baz = foo(0); // Not OK; throws at runtime when exceptions are enabled.
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:5: warning: initialization of 'baz' with static storage duration may throw an exception that cannot be caught [cert-err58-cpp]
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// CHECK-EXCEPTIONS: :[[@LINE-6]]:15: note: possibly throwing function declared here
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} // namespace pr35457
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#endif // NONEXCEPTIONS
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namespace pr39777 {
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struct S { S(); };
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struct T { T() noexcept; };
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auto Okay1 = []{ S s; };
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auto Okay2 = []{ (void)new int; };
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auto NotOkay1 = []{ S s; return 12; }(); // Because the lambda call is not noexcept
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:6: warning: initialization of 'NotOkay1' with static storage duration may throw an exception that cannot be caught [cert-err58-cpp]
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// CHECK-EXCEPTIONS: :[[@LINE-7]]:12: note: possibly throwing constructor declared here
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auto NotOkay2 = []() noexcept { S s; return 12; }(); // Because S::S() is not noexcept
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:6: warning: initialization of 'NotOkay2' with static storage duration may throw an exception that cannot be caught [cert-err58-cpp]
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// CHECK-EXCEPTIONS: :[[@LINE-10]]:12: note: possibly throwing constructor declared here
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auto Okay3 = []() noexcept { T t; return t; }();
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struct U {
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U() noexcept;
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auto getBadLambda() const noexcept {
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return []{ S s; return s; };
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}
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};
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auto Okay4 = []{ U u; return u.getBadLambda(); }();
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auto NotOkay3 = []() noexcept { U u; return u.getBadLambda(); }()(); // Because the lambda returned and called is not noexcept
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// CHECK-EXCEPTIONS: :[[@LINE-1]]:6: warning: initialization of 'NotOkay3' with static storage duration may throw an exception that cannot be caught [cert-err58-cpp]
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// CHECK-EXCEPTIONS: :[[@LINE-6]]:12: note: possibly throwing function declared here
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#ifndef NONEXCEPTIONS
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struct Bad {
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Bad() {
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throw 12;
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}
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};
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static auto NotOkay4 = [bad = Bad{}](){};
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// FIXME: the above should be diagnosed because the capture init can trigger
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// an exception when constructing the Bad object.
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#endif // NONEXCEPTIONS
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}
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