| author |  Matthew Borkowski <matthew.h.borkowski@gmail.com> 2021-10-09 18:50:44-04:00 |
| committer | Matthew Borkowski <matthew.h.borkowski@gmail.com> 2021-10-09 20:39:50-04:00 |
| log | ea45062d8227f9f9f1356c78eac5a0daa578f97e |
| tree | 7435b9cc3ffa9212671b8dfa1000915531524964 |
| parent | 784be05a1abd94da96cce7c6381395f4f7b1ab5f |
stage2: add astgen errors for untyped union fields and union field values without inferred tag type
2 files changed, 50 insertions(+), 0 deletions(-)
src
test
stage2
src/AstGen.zig+16
| ... | ... | @@ -4155,6 +4155,8 @@ fn unionDeclInner( |
| 4155 | 4155 | else |
| 4156 | 4156 | try typeExpr(&block_scope, &namespace.base, member.ast.type_expr); |
| 4157 | 4157 | fields_data.appendAssumeCapacity(@enumToInt(field_type)); |
| 4158 | } else if (arg_inst == .none and !have_auto_enum) { | |
| 4159 | return astgen.failNode(member_node, "union field missing type", .{}); | |
| 4158 | 4160 | } |
| 4159 | 4161 | if (have_align) { |
| 4160 | 4162 | const align_inst = try expr(&block_scope, &block_scope.base, .{ .ty = .u32_type }, member.ast.align_expr); |
| ... | ... | @@ -4175,6 +4177,20 @@ fn unionDeclInner( |
| 4175 | 4177 | }, |
| 4176 | 4178 | ); |
| 4177 | 4179 | } |
| 4180 | if (!have_auto_enum) { | |
| 4181 | return astgen.failNodeNotes( | |
| 4182 | node, | |
| 4183 | "explicitly valued tagged union requires inferred enum tag type", | |
| 4184 | .{}, | |
| 4185 | &[_]u32{ | |
| 4186 | try astgen.errNoteNode( | |
| 4187 | member.ast.value_expr, | |
| 4188 | "tag value specified here", | |
| 4189 | .{}, | |
| 4190 | ), | |
| 4191 | }, | |
| 4192 | ); | |
| 4193 | } | |
| 4178 | 4194 | const tag_value = try expr(&block_scope, &block_scope.base, .{ .ty = arg_inst }, member.ast.value_expr); |
| 4179 | 4195 | fields_data.appendAssumeCapacity(@enumToInt(tag_value)); |
| 4180 | 4196 | } |
test/stage2/cbe.zig+34
| ... | ... | @@ -570,6 +570,40 @@ pub fn addCases(ctx: *TestContext) !void { |
| 570 | 570 | , ""); |
| 571 | 571 | } |
| 572 | 572 | |
| 573 | { | |
| 574 | var case = ctx.exeFromCompiledC("unions", .{}); | |
| 575 | ||
| 576 | case.addError( | |
| 577 | \\const U = union { | |
| 578 | \\ a: u32, | |
| 579 | \\ b | |
| 580 | \\}; | |
| 581 | , &.{ | |
| 582 | ":3:5: error: union field missing type", | |
| 583 | }); | |
| 584 | ||
| 585 | case.addError( | |
| 586 | \\const E = enum { a, b }; | |
| 587 | \\const U = union(E) { | |
| 588 | \\ a: u32 = 1, | |
| 589 | \\ b: f32 = 2, | |
| 590 | \\}; | |
| 591 | , &.{ | |
| 592 | ":2:11: error: explicitly valued tagged union requires inferred enum tag type", | |
| 593 | ":3:14: note: tag value specified here", | |
| 594 | }); | |
| 595 | ||
| 596 | case.addError( | |
| 597 | \\const U = union(enum) { | |
| 598 | \\ a: u32 = 1, | |
| 599 | \\ b: f32 = 2, | |
| 600 | \\}; | |
| 601 | , &.{ | |
| 602 | ":1:11: error: explicitly valued tagged union missing integer tag type", | |
| 603 | ":2:14: note: tag value specified here", | |
| 604 | }); | |
| 605 | } | |
| 606 | ||
| 573 | 607 | { |
| 574 | 608 | var case = ctx.exeFromCompiledC("enums", .{}); |
| 575 | 609 |