Merge pull request #11185 from topolarity/bugfix-11159

stage2: resolve panic on array-like tuple initialization

src/AstGen.zig

@@ -4092,15 +4092,17 @@ fn structDeclInner(
         const doc_comment_index = try astgen.docCommentAsString(member.firstToken());
         wip_members.appendToField(doc_comment_index);
 
-        known_non_opv = known_non_opv or
-            nodeImpliesMoreThanOnePossibleValue(tree, member.ast.type_expr);
-        known_comptime_only = known_comptime_only or
-            nodeImpliesComptimeOnly(tree, member.ast.type_expr);
-
         const have_align = member.ast.align_expr != 0;
         const have_value = member.ast.value_expr != 0;
         const is_comptime = member.comptime_token != null;
         const unused = false;
+
+        if (!is_comptime) {
+            known_non_opv = known_non_opv or
+                nodeImpliesMoreThanOnePossibleValue(tree, member.ast.type_expr);
+            known_comptime_only = known_comptime_only or
+                nodeImpliesComptimeOnly(tree, member.ast.type_expr);
+        }
         wip_members.nextField(bits_per_field, .{ have_align, have_value, is_comptime, unused });
 
         if (have_align) {

src/Sema.zig

@@ -3203,11 +3203,6 @@ fn zirValidateArrayInit(
 
         // Determine whether the value stored to this pointer is comptime-known.
 
-        if (opt_opv) |opv| {
-            element_vals[i] = opv;
-            continue;
-        }
-
         const elem_ptr_air_ref = sema.inst_map.get(elem_ptr).?;
         const elem_ptr_air_inst = Air.refToIndex(elem_ptr_air_ref).?;
         // Find the block index of the elem_ptr so that we can look at the next
@@ -3223,6 +3218,12 @@ fn zirValidateArrayInit(
             break :inst block.instructions.items[block_index + 1];
         };
 
+        // Array has one possible value, so value is always comptime-known
+        if (opt_opv) |opv| {
+            element_vals[i] = opv;
+            continue;
+        }
+
         // If the next instructon is a store with a comptime operand, this element
         // is comptime.
         switch (air_tags[next_air_inst]) {
@@ -20860,6 +20861,7 @@ pub fn typeHasOnePossibleValue(
             const resolved_ty = try sema.resolveTypeFields(block, src, ty);
             const s = resolved_ty.castTag(.@"struct").?.data;
             for (s.fields.values()) |value| {
+                if (value.is_comptime) continue;
                 if ((try sema.typeHasOnePossibleValue(block, src, value.ty)) == null) {
                     return null;
                 }
@@ -21532,6 +21534,7 @@ fn typeRequiresComptime(sema: *Sema, block: *Block, src: LazySrcLoc, ty: Type) C
 
                     struct_obj.requires_comptime = .wip;
                     for (struct_obj.fields.values()) |field| {
+                        if (field.is_comptime) continue;
                         if (try sema.typeRequiresComptime(block, src, field.ty)) {
                             struct_obj.requires_comptime = .yes;
                             return true;

src/codegen/llvm.zig

@@ -5422,21 +5422,22 @@ pub const FuncGen = struct {
         const bin_op = self.air.instructions.items(.data)[inst].bin_op;
         const dest_ptr = try self.resolveInst(bin_op.lhs);
         const ptr_ty = self.air.typeOf(bin_op.lhs);
+        const operand_ty = ptr_ty.childType();
+        if (!operand_ty.isFnOrHasRuntimeBitsIgnoreComptime()) return null;
 
         // TODO Sema should emit a different instruction when the store should
         // possibly do the safety 0xaa bytes for undefined.
         const val_is_undef = if (self.air.value(bin_op.rhs)) |val| val.isUndefDeep() else false;
         if (val_is_undef) {
-            const elem_ty = ptr_ty.childType();
             const target = self.dg.module.getTarget();
-            const elem_size = elem_ty.abiSize(target);
+            const operand_size = operand_ty.abiSize(target);
             const u8_llvm_ty = self.context.intType(8);
             const ptr_u8_llvm_ty = u8_llvm_ty.pointerType(0);
             const dest_ptr_u8 = self.builder.buildBitCast(dest_ptr, ptr_u8_llvm_ty, "");
             const fill_char = u8_llvm_ty.constInt(0xaa, .False);
             const dest_ptr_align = ptr_ty.ptrAlignment(target);
             const usize_llvm_ty = try self.dg.llvmType(Type.usize);
-            const len = usize_llvm_ty.constInt(elem_size, .False);
+            const len = usize_llvm_ty.constInt(operand_size, .False);
             _ = self.builder.buildMemSet(dest_ptr_u8, fill_char, len, dest_ptr_align, ptr_ty.isVolatilePtr());
             if (self.dg.module.comp.bin_file.options.valgrind) {
                 // TODO generate valgrind client request to mark byte range as undefined

src/type.zig

@@ -2098,6 +2098,7 @@ pub const Type = extern union {
                 }
                 assert(struct_obj.haveFieldTypes());
                 for (struct_obj.fields.values()) |value| {
+                    if (value.is_comptime) continue;
                     if (value.ty.hasRuntimeBitsAdvanced(ignore_comptime_only))
                         return true;
                 } else {

test/behavior.zig

@@ -65,8 +65,11 @@ test {
     _ = @import("behavior/bugs/10970.zig");
     _ = @import("behavior/bugs/11046.zig");
     _ = @import("behavior/bugs/11139.zig");
+    _ = @import("behavior/bugs/11159.zig");
+    _ = @import("behavior/bugs/11162.zig");
     _ = @import("behavior/bugs/11165.zig");
     _ = @import("behavior/bugs/11181.zig");
+    _ = @import("behavior/bugs/11182.zig");
     _ = @import("behavior/call.zig");
     _ = @import("behavior/cast.zig");
     _ = @import("behavior/comptime_memory.zig");

test/behavior/bugs/11159.zig

@@ -0,0 +1,23 @@
+const std = @import("std");
+const builtin = @import("builtin");
+
+test {
+    const T = @TypeOf(.{ @as(i32, 0), @as(u32, 0) });
+    var a: T = .{ 0, 0 };
+    _ = a;
+}
+
+test {
+    if (builtin.zig_backend == .stage1) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
+
+    const S = struct {
+        comptime x: i32 = 0,
+        comptime y: u32 = 0,
+    };
+    var a: S = .{};
+    _ = a;
+    var b = S{};
+    _ = b;
+}

test/behavior/bugs/11162.zig

@@ -0,0 +1,16 @@
+const std = @import("std");
+const builtin = @import("builtin");
+const expect = std.testing.expect;
+
+test {
+    if (builtin.zig_backend == .stage1) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend != .stage1) return error.SkipZigTest; // TODO
+
+    var x: u32 = 15;
+    const T = @TypeOf(.{ @as(i32, -1234), @as(u32, 5678), x });
+    var a: T = .{ -1234, 5678, x + 1 };
+
+    try expect(a[0] == -1234);
+    try expect(a[1] == 5678);
+    try expect(a[2] == 16);
+}

test/behavior/bugs/11182.zig

@@ -0,0 +1,10 @@
+const std = @import("std");
+const builtin = @import("builtin");
+
+test {
+    if (builtin.zig_backend != .stage1) return error.SkipZigTest; // TODO
+
+    const T = @TypeOf(.{ @as(i32, 0), @as(u32, 0) });
+    var a = T{ 0, 0 };
+    _ = a;
+}