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stage1: add compile errors for sentinel slicing

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closes #3963
This commit is contained in:
Michael Dusan
2020-04-03 11:41:55 -04:00
committed by Andrew Kelley
parent f1425fd9da
commit db4c06ce60
4 changed files with 602 additions and 1 deletions
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295
test/compile_errors.zig
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@@ -6857,4 +6857,299 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
"tmp.zig:7:32: error: destination type 'u16' has size 2 but source type '[]u8' has size 16",
"tmp.zig:7:37: note: referenced here",
});
cases.add("comptime slice-sentinel is out of bounds (unterminated)",
\\export fn foo_array() void {
\\ comptime {
\\ var target = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_ptr_array() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target = &buf;
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = &buf;
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = @ptrCast([*]u8, &buf);
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = &buf;
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = @ptrCast([*c]u8, &buf);
\\ const slice = target[0..14 :0];
\\ }
\\}
\\export fn foo_slice() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: []u8 = &buf;
\\ const slice = target[0..14 :0];
\\ }
\\}
, &[_][]const u8{
":4:29: error: slice-sentinel is out of bounds",
":11:29: error: slice-sentinel is out of bounds",
":18:29: error: slice-sentinel is out of bounds",
":25:29: error: slice-sentinel is out of bounds",
":32:29: error: slice-sentinel is out of bounds",
":39:29: error: slice-sentinel is out of bounds",
":46:29: error: slice-sentinel is out of bounds",
});
cases.add("comptime slice-sentinel is out of bounds (terminated)",
\\export fn foo_array() void {
\\ comptime {
\\ var target = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ const slice = target[0..15 :1];
\\ }
\\}
\\export fn foo_ptr_array() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target = &buf;
\\ const slice = target[0..15 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = &buf;
\\ const slice = target[0..15 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = @ptrCast([*]u8, &buf);
\\ const slice = target[0..15 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = &buf;
\\ const slice = target[0..15 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = @ptrCast([*c]u8, &buf);
\\ const slice = target[0..15 :0];
\\ }
\\}
\\export fn foo_slice() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: []u8 = &buf;
\\ const slice = target[0..15 :0];
\\ }
\\}
, &[_][]const u8{
":4:29: error: out of bounds slice",
":11:29: error: out of bounds slice",
":18:29: error: out of bounds slice",
":25:29: error: out of bounds slice",
":32:29: error: out of bounds slice",
":39:29: error: out of bounds slice",
":46:29: error: out of bounds slice",
});
cases.add("comptime slice-sentinel does not match memory at target index (unterminated)",
\\export fn foo_array() void {
\\ comptime {
\\ var target = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_ptr_array() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = @ptrCast([*]u8, &buf);
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = @ptrCast([*c]u8, &buf);
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_slice() void {
\\ comptime {
\\ var buf = [_]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: []u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
, &[_][]const u8{
":4:29: error: slice-sentinel does not match memory at target index",
":11:29: error: slice-sentinel does not match memory at target index",
":18:29: error: slice-sentinel does not match memory at target index",
":25:29: error: slice-sentinel does not match memory at target index",
":32:29: error: slice-sentinel does not match memory at target index",
":39:29: error: slice-sentinel does not match memory at target index",
":46:29: error: slice-sentinel does not match memory at target index",
});
cases.add("comptime slice-sentinel does not match memory at target index (terminated)",
\\export fn foo_array() void {
\\ comptime {
\\ var target = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_ptr_array() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = @ptrCast([*]u8, &buf);
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = @ptrCast([*c]u8, &buf);
\\ const slice = target[0..3 :0];
\\ }
\\}
\\export fn foo_slice() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: []u8 = &buf;
\\ const slice = target[0..3 :0];
\\ }
\\}
, &[_][]const u8{
":4:29: error: slice-sentinel does not match memory at target index",
":11:29: error: slice-sentinel does not match memory at target index",
":18:29: error: slice-sentinel does not match memory at target index",
":25:29: error: slice-sentinel does not match memory at target index",
":32:29: error: slice-sentinel does not match memory at target index",
":39:29: error: slice-sentinel does not match memory at target index",
":46:29: error: slice-sentinel does not match memory at target index",
});
cases.add("comptime slice-sentinel does not match target-sentinel",
\\export fn foo_array() void {
\\ comptime {
\\ var target = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_ptr_array() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target = &buf;
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = &buf;
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_vector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*]u8 = @ptrCast([*]u8, &buf);
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialBaseArray() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = &buf;
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_cvector_ConstPtrSpecialRef() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: [*c]u8 = @ptrCast([*c]u8, &buf);
\\ const slice = target[0..14 :255];
\\ }
\\}
\\export fn foo_slice() void {
\\ comptime {
\\ var buf = [_:0]u8{ 'a', 'b', 'c', 'd' } ++ [_]u8{undefined} ** 10;
\\ var target: []u8 = &buf;
\\ const slice = target[0..14 :255];
\\ }
\\}
, &[_][]const u8{
":4:29: error: slice-sentinel does not match target-sentinel",
":11:29: error: slice-sentinel does not match target-sentinel",
":18:29: error: slice-sentinel does not match target-sentinel",
":25:29: error: slice-sentinel does not match target-sentinel",
":32:29: error: slice-sentinel does not match target-sentinel",
":39:29: error: slice-sentinel does not match target-sentinel",
":46:29: error: slice-sentinel does not match target-sentinel",
});
}