| author |  Andrew Kelley <andrew@ziglang.org> 2020-12-03 17:07:13-07:00 |
| committer | Andrew Kelley <andrew@ziglang.org> 2020-12-03 17:07:13-07:00 |
| log | afaef3619458e6e8c79c15944fa871ca6cc5a58a |
| tree | 0266ab1af76bdb24a2821fffedb03476e0652ab1 |
| parent | fd18252a7165f04c07289c422eb0b808cc245b05 |
stage1: compile error for pointer arithmetic on ptr-to-array
See #20182 files changed, 11 insertions(+), 1 deletions(-)
src
stage1
src/stage1/ir.cpp+1-1
| ... | ... | @@ -17841,7 +17841,7 @@ static bool is_pointer_arithmetic_allowed(ZigType *lhs_type, IrBinOp op) { |
| 17841 | 17841 | return false; |
| 17842 | 17842 | switch (lhs_type->data.pointer.ptr_len) { |
| 17843 | 17843 | case PtrLenSingle: |
| 17844 | return lhs_type->data.pointer.child_type->id == ZigTypeIdArray; | |
| 17844 | return false; | |
| 17845 | 17845 | case PtrLenUnknown: |
| 17846 | 17846 | case PtrLenC: |
| 17847 | 17847 | return true; |
test/compile_errors.zig+10
| ... | ... | @@ -2,6 +2,16 @@ const tests = @import("tests.zig"); |
| 2 | 2 | const std = @import("std"); |
| 3 | 3 | |
| 4 | 4 | pub fn addCases(cases: *tests.CompileErrorContext) void { |
| 5 | cases.add("pointer arithmetic on pointer-to-array", | |
| 6 | \\export fn foo() void { | |
| 7 | \\ var x: [10]u8 = undefined; | |
| 8 | \\ var y = &x; | |
| 9 | \\ var z = y + 1; | |
| 10 | \\} | |
| 11 | , &[_][]const u8{ | |
| 12 | "tmp.zig:4:17: error: integer value 1 cannot be coerced to type '*[10]u8'", | |
| 13 | }); | |
| 14 | ||
| 5 | 15 | cases.add("@Type() union payload is undefined", |
| 6 | 16 | \\const Foo = @Type(@import("std").builtin.TypeInfo{ |
| 7 | 17 | \\ .Struct = undefined, |