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321 lines
7 KiB
D
321 lines
7 KiB
D
/*
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REQUIRED_ARGS: -preview=dip1000
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*/
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/*
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TEST_OUTPUT:
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---
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fail_compilation/retscope6.d(6007): Error: escaping a reference to local variable `i` by copying `& i` into allocated memory is not allowed in a `@safe` function
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---
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*/
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#line 6000
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// https://issues.dlang.org/show_bug.cgi?id=17795
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int* test() @safe
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{
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int i;
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int*[][] arr = new int*[][](1);
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arr[0] ~= &i;
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return arr[0][0];
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}
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/* TEST_OUTPUT:
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---
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fail_compilation/retscope6.d(7034): Error: assigning address of variable `i` to `s` with longer lifetime is not allowed in a `@safe` function
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fail_compilation/retscope6.d(7035): Error: assigning address of variable `i` to `s` with longer lifetime is not allowed in a `@safe` function
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fail_compilation/retscope6.d(7025): Error: assigning scope variable `__param_2` to `ref` variable `t` with longer lifetime is not allowed in a `@safe` function
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fail_compilation/retscope6.d(7037): Error: template instance `retscope6.S.emplace4!(int*)` error instantiating
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fail_compilation/retscope6.d(7037): Error: assigning address of variable `i` to `s` with longer lifetime is not allowed in a `@safe` function
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---
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*/
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#line 7000
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alias T = int*;
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struct S
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{
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T payload;
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static void emplace(Args...)(ref S s, Args args) @safe
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{
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s.payload = args[0];
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}
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void emplace2(Args...)(Args args) @safe
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{
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payload = args[0];
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}
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static void emplace3(Args...)(S s, Args args) @safe
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{
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s.payload = args[0];
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}
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static void emplace4(Args...)(scope ref S s, scope out S t, scope Args args) @safe
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{
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s.payload = args[0];
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t.payload = args[0];
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}
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}
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void foo() @safe
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{
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S s;
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int i;
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s.emplace(s, &i);
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s.emplace2(&i);
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s.emplace3(s, &i);
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s.emplace4(s, s, &i);
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}
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/* TEST_OUTPUT:
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---
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fail_compilation/retscope6.d(8016): Error: assigning address of variable `i` to `p` with longer lifetime is not allowed in a `@safe` function
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fail_compilation/retscope6.d(8031): Error: assigning reference to local variable `i` to non-scope parameter `p` calling `betty` is not allowed in a `@safe` function
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fail_compilation/retscope6.d(8031): Error: assigning reference to local variable `j` to non-scope parameter `q` calling `betty` is not allowed in a `@safe` function
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fail_compilation/retscope6.d(8023): which is not `scope` because of `p = q`
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fail_compilation/retscope6.d(8048): Error: assigning reference to local variable `i` to non-scope parameter `p` calling `archie` is not allowed in a `@safe` function
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fail_compilation/retscope6.d(8039): which is not `scope` because of `r = p`
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fail_compilation/retscope6.d(8048): Error: assigning reference to local variable `j` to non-scope parameter `q` calling `archie` is not allowed in a `@safe` function
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fail_compilation/retscope6.d(8038): which is not `scope` because of `p = q`
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---
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*/
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// https://issues.dlang.org/show_bug.cgi?id=19035
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#line 8000
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@safe
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{
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void escape(int*);
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/**********************/
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void frank()(ref scope int* p, int* s)
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{
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p = s; // should error here
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}
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void testfrankly()
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{
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int* p;
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int i;
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frank(p, &i);
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}
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/**********************/
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void betty()(int* p, int* q)
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{
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p = q;
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escape(p);
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}
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void testbetty()
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{
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int i;
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int j;
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betty(&i, &j); // should error on i and j
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}
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/**********************/
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void archie()(int* p, int* q, int* r)
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{
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p = q;
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r = p;
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escape(q);
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}
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void testarchie()
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{
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int i;
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int j;
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int k;
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archie(&i, &j, &k); // should error on j
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}
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}
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/* TEST_OUTPUT:
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---
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fail_compilation/retscope6.d(9023): Error: escaping a reference to local variable `i` by returning `fred(& i)` is not allowed in a `@safe` function
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---
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*/
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#line 9000
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@safe
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{
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alias T9 = S9!(); struct S9()
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{
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this(int* q)
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{
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this.p = q;
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}
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int* p;
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}
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auto fred(int* r)
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{
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return T9(r);
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}
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T9 testfred()
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{
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int i;
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auto j = fred(&i); // ok
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return fred(&i); // error
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}
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/* TEST_OUTPUT:
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---
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fail_compilation/retscope6.d(10003): Error: assigning scope variable `values` to non-scope parameter `values` calling `escape` is not allowed in a `@safe` function
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---
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*/
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#line 10000
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void variadicCaller(int[] values...)
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{
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escape(values);
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}
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void escape(int[] values) {}
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/* TEST_OUTPUT:
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---
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fail_compilation/retscope6.d(11004): Error: assigning address of variable `buffer` to `secret` with longer lifetime is not allowed in a `@safe` function
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---
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*/
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#line 11000
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void hmac(scope ubyte[] secret)
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{
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ubyte[10] buffer;
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secret = buffer[];
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}
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}
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/* TEST_OUTPUT:
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---
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fail_compilation/retscope6.d(12011): Error: escaping a reference to local variable `x` by returning `escape_m_20150(& x)` is not allowed in a `@safe` function
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fail_compilation/retscope6.d(12022): Error: escaping a reference to local variable `x` by returning `escape_c_20150(& x)` is not allowed in a `@safe` function
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---
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*/
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#line 12000
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// https://issues.dlang.org/show_bug.cgi?id=20150
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int* escape_m_20150(int* r) @safe pure nothrow
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{
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return r;
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}
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int* f_m_20150() @safe nothrow
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{
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int x = 42;
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return escape_m_20150(&x);
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}
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const(int)* escape_c_20150(const int* r) @safe pure nothrow
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{
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return r;
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}
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const(int)* f_c_20150() @safe nothrow
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{
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int x = 42;
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return escape_c_20150(&x);
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}
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/* TEST_OUTPUT:
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---
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fail_compilation/retscope6.d(13010): Error: assigning reference to local variable `str` to non-scope parameter `x` calling `f_throw` is not allowed in a `@safe` function
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---
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*/
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#line 13000
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// https://issues.dlang.org/show_bug.cgi?id=22221
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void f_throw(string x) @safe pure
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{
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throw new Exception(x);
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}
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void escape_throw_20150() @safe
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{
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immutable(char)[4] str;
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f_throw(str[]);
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}
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/* TEST_OUTPUT:
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---
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fail_compilation/retscope6.d(14019): Error: assigning scope variable `scopePtr` to non-scope parameter `x` calling `noInfer23021` is not allowed in a `@safe` function
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fail_compilation/retscope6.d(14009): which is not `scope` because of `*escapeHole = cast(const(int)*)x`
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fail_compilation/retscope6.d(14022): Error: returning scope variable `scopePtr` is not allowed in a `@safe` function
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---
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*/
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#line 14000
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// https://issues.dlang.org/show_bug.cgi?id=23021
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ref int infer23021(ref int* x) @safe pure nothrow
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{
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return *x;
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}
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ref int noInfer23021(ref int* x, const(int)** escapeHole = null) @safe pure nothrow
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{
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*escapeHole = x;
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return *x;
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}
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ref int escape23021() @safe
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{
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scope int* scopePtr;
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int* nonScopePtr = null;
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// don't infer scope
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cast(void) noInfer23021(scopePtr); // error
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// ensure we infer return scope
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return infer23021(scopePtr); // error
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// ensure we do not infer return ref
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return infer23021(nonScopePtr); // no error
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}
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/******************************/
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/* TEST_OUTPUT:
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---
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fail_compilation/retscope6.d(14050): Error: assigning scope variable `z` to non-scope parameter `y` calling `f23294` is not allowed in a `@safe` function
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fail_compilation/retscope6.d(14044): which is not `scope` because of `x = y`
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---
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*/
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// https://issues.dlang.org/show_bug.cgi?id=23294
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@safe:
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int g23294;
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auto f23294(int* x, int* y)
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{
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x = y;
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g23294++; // make sure it's not inferring scope from pure
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}
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void escape23294(scope int* z)
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{
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f23294(z, z); // passes
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}
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