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-rw-r--r--src/translate_c/common.zig8
-rw-r--r--test/translate_c.zig178
2 files changed, 186 insertions, 0 deletions
diff --git a/src/translate_c/common.zig b/src/translate_c/common.zig
index c26ab2798b..478f41626b 100644
--- a/src/translate_c/common.zig
+++ b/src/translate_c/common.zig
@@ -291,6 +291,14 @@ pub fn ScopeExtra(comptime Context: type, comptime Type: type) type {
}
pub fn skipVariableDiscard(inner: *Scope, name: []const u8) void {
+ if (true) {
+ // TODO: due to 'local variable is never mutated' errors, we can
+ // only skip discards if a variable is used as an lvalue, which
+ // we don't currently have detection for in translate-c.
+ // Once #17584 is completed, perhaps we can do away with this
+ // logic entirely, and instead rely on render to fixup code.
+ return;
+ }
var scope = inner;
while (true) {
switch (scope.id) {
diff --git a/test/translate_c.zig b/test/translate_c.zig
index 2df0f8c6cf..fb4ab33480 100644
--- a/test/translate_c.zig
+++ b/test/translate_c.zig
@@ -37,6 +37,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo(arg_a: c_int) void {
\\ var a = arg_a;
+ \\ _ = &a;
\\ while (true) {
\\ if (a != 0) break;
\\ }
@@ -81,9 +82,11 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo(arg_x: c_ulong) c_ulong {
\\ var x = arg_x;
+ \\ _ = &x;
\\ const union_unnamed_1 = extern union {
\\ _x: c_ulong,
\\ };
+ \\ _ = &union_unnamed_1;
\\ return (union_unnamed_1{
\\ ._x = x,
\\ })._x;
@@ -142,6 +145,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub extern fn bar(...) c_int;
\\pub export fn foo() void {
\\ var a: c_int = undefined;
+ \\ _ = &a;
\\ if (a != 0) a = 2 else _ = bar();
\\}
});
@@ -194,6 +198,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ B: c_int = @import("std").mem.zeroes(c_int),
\\ C: c_int = @import("std").mem.zeroes(c_int),
\\ };
+ \\ _ = &struct_Foo;
\\ var a: struct_Foo = struct_Foo{
\\ .A = @as(c_int, 0),
\\ .B = 0,
@@ -206,6 +211,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ B: c_int = @import("std").mem.zeroes(c_int),
\\ C: c_int = @import("std").mem.zeroes(c_int),
\\ };
+ \\ _ = &struct_Foo_1;
\\ var a_2: struct_Foo_1 = struct_Foo_1{
\\ .A = @as(c_int, 0),
\\ .B = 0,
@@ -242,6 +248,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ };
\\ _ = &union_unnamed_1;
\\ const Foo = union_unnamed_1;
+ \\ _ = &Foo;
\\ var a: Foo = Foo{
\\ .A = @as(c_int, 0),
\\ };
@@ -254,6 +261,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ };
\\ _ = &union_unnamed_2;
\\ const Foo_1 = union_unnamed_2;
+ \\ _ = &Foo_1;
\\ var a_2: Foo_1 = Foo_1{
\\ .A = @as(c_int, 0),
\\ };
@@ -268,6 +276,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\#define MEM_PHYSICAL_TO_K0(x) (void*)((uint32_t)(x) + SYS_BASE_CACHED)
, &[_][]const u8{
\\pub inline fn MEM_PHYSICAL_TO_K0(x: anytype) ?*anyopaque {
+ \\ _ = &x;
\\ return @import("std").zig.c_translation.cast(?*anyopaque, @import("std").zig.c_translation.cast(u32, x) + SYS_BASE_CACHED);
\\}
});
@@ -310,6 +319,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub const VALUE = ((((@as(c_int, 1) + (@as(c_int, 2) * @as(c_int, 3))) + (@as(c_int, 4) * @as(c_int, 5))) + @as(c_int, 6)) << @as(c_int, 7)) | @intFromBool(@as(c_int, 8) == @as(c_int, 9));
,
\\pub inline fn _AL_READ3BYTES(p: anytype) @TypeOf((@import("std").zig.c_translation.cast([*c]u8, p).* | ((@import("std").zig.c_translation.cast([*c]u8, p) + @as(c_int, 1)).* << @as(c_int, 8))) | ((@import("std").zig.c_translation.cast([*c]u8, p) + @as(c_int, 2)).* << @as(c_int, 16))) {
+ \\ _ = &p;
\\ return (@import("std").zig.c_translation.cast([*c]u8, p).* | ((@import("std").zig.c_translation.cast([*c]u8, p) + @as(c_int, 1)).* << @as(c_int, 8))) | ((@import("std").zig.c_translation.cast([*c]u8, p) + @as(c_int, 2)).* << @as(c_int, 16));
\\}
});
@@ -390,6 +400,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub const Color = struct_Color;
,
\\pub inline fn CLITERAL(@"type": anytype) @TypeOf(@"type") {
+ \\ _ = &@"type";
\\ return @"type";
\\}
,
@@ -407,6 +418,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\};
,
\\pub inline fn A(_x: anytype) MyCStruct {
+ \\ _ = &_x;
\\ return @import("std").mem.zeroInit(MyCStruct, .{
\\ .x = _x,
\\ });
@@ -438,6 +450,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\#define __ferror_unlocked_body(_fp) (((_fp)->_flags & _IO_ERR_SEEN) != 0)
, &[_][]const u8{
\\pub inline fn __ferror_unlocked_body(_fp: anytype) @TypeOf((_fp.*._flags & _IO_ERR_SEEN) != @as(c_int, 0)) {
+ \\ _ = &_fp;
\\ return (_fp.*._flags & _IO_ERR_SEEN) != @as(c_int, 0);
\\}
});
@@ -447,6 +460,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\#define BAR 1 && 2 > 4
, &[_][]const u8{
\\pub inline fn FOO(x: anytype) @TypeOf(@intFromBool(x >= @as(c_int, 0)) + @intFromBool(x >= @as(c_int, 0))) {
+ \\ _ = &x;
\\ return @intFromBool(x >= @as(c_int, 0)) + @intFromBool(x >= @as(c_int, 0));
\\}
,
@@ -512,6 +526,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\};
,
\\pub inline fn bar(x: anytype) @TypeOf(baz(@as(c_int, 1), @as(c_int, 2))) {
+ \\ _ = &x;
\\ return blk_1: {
\\ _ = &x;
\\ _ = @as(c_int, 3);
@@ -642,6 +657,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\};
\\pub export fn foo(arg_x: [*c]outer) void {
\\ var x = arg_x;
+ \\ _ = &x;
\\ x.*.unnamed_0.unnamed_0.y = @as(c_int, @bitCast(@as(c_uint, x.*.unnamed_0.x)));
\\}
});
@@ -728,6 +744,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub const struct_opaque_2 = opaque {};
\\pub export fn function(arg_opaque_1: ?*struct_opaque) void {
\\ var opaque_1 = arg_opaque_1;
+ \\ _ = &opaque_1;
\\ var cast: ?*struct_opaque_2 = @as(?*struct_opaque_2, @ptrCast(opaque_1));
\\ _ = &cast;
\\}
@@ -827,6 +844,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: c_int = undefined;
+ \\ _ = &a;
\\ _ = @as(c_int, 1);
\\ _ = "hey";
\\ _ = @as(c_int, 1) + @as(c_int, 1);
@@ -912,6 +930,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub extern fn foo() void;
\\pub export fn bar() void {
\\ var func_ptr: ?*anyopaque = @as(?*anyopaque, @ptrCast(&foo));
+ \\ _ = &func_ptr;
\\ var typed_func_ptr: ?*const fn () callconv(.C) void = @as(?*const fn () callconv(.C) void, @ptrFromInt(@as(c_ulong, @intCast(@intFromPtr(func_ptr)))));
\\ _ = &typed_func_ptr;
\\}
@@ -953,8 +972,11 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn s() c_int {
\\ var a: c_int = undefined;
+ \\ _ = &a;
\\ var b: c_int = undefined;
+ \\ _ = &b;
\\ var c: c_int = undefined;
+ \\ _ = &c;
\\ c = a + b;
\\ c = a - b;
\\ c = a * b;
@@ -964,8 +986,11 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\}
\\pub export fn u() c_uint {
\\ var a: c_uint = undefined;
+ \\ _ = &a;
\\ var b: c_uint = undefined;
+ \\ _ = &b;
\\ var c: c_uint = undefined;
+ \\ _ = &c;
\\ c = a +% b;
\\ c = a -% b;
\\ c = a *% b;
@@ -1361,6 +1386,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub export fn foo() void {
\\ var a: c_int = undefined;
\\ _ = &a;
+ \\ _ = &a;
\\}
});
@@ -1372,6 +1398,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() ?*anyopaque {
\\ var x: [*c]c_ushort = undefined;
+ \\ _ = &x;
\\ return @as(?*anyopaque, @ptrCast(x));
\\}
});
@@ -1496,6 +1523,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub export fn foo() void {
\\ {
\\ var i: c_int = 0;
+ \\ _ = &i;
\\ while (i != 0) : (i += 1) {}
\\ }
\\}
@@ -1519,6 +1547,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var i: c_int = undefined;
+ \\ _ = &i;
\\ {
\\ i = 3;
\\ while (i != 0) : (i -= 1) {}
@@ -1562,6 +1591,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn ptrcast() [*c]f32 {
\\ var a: [*c]c_int = undefined;
+ \\ _ = &a;
\\ return @as([*c]f32, @ptrCast(@alignCast(a)));
\\}
});
@@ -1574,6 +1604,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn ptrptrcast() [*c][*c]f32 {
\\ var a: [*c][*c]c_int = undefined;
+ \\ _ = &a;
\\ return @as([*c][*c]f32, @ptrCast(@alignCast(a)));
\\}
});
@@ -1597,6 +1628,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn test_ptr_cast() void {
\\ var p: ?*anyopaque = undefined;
+ \\ _ = &p;
\\ {
\\ var to_char: [*c]u8 = @as([*c]u8, @ptrCast(@alignCast(p)));
\\ _ = &to_char;
@@ -1633,8 +1665,11 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn while_none_bool() c_int {
\\ var a: c_int = undefined;
+ \\ _ = &a;
\\ var b: f32 = undefined;
+ \\ _ = &b;
\\ var c: ?*anyopaque = undefined;
+ \\ _ = &c;
\\ while (a != 0) return 0;
\\ while (b != 0) return 1;
\\ while (c != null) return 2;
@@ -1655,8 +1690,11 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn for_none_bool() c_int {
\\ var a: c_int = undefined;
+ \\ _ = &a;
\\ var b: f32 = undefined;
+ \\ _ = &b;
\\ var c: ?*anyopaque = undefined;
+ \\ _ = &c;
\\ while (a != 0) return 0;
\\ while (b != 0) return 1;
\\ while (c != null) return 2;
@@ -1693,6 +1731,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var x: [*c]c_int = undefined;
+ \\ _ = &x;
\\ x.* = 1;
\\}
});
@@ -1706,7 +1745,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() c_int {
\\ var x: c_int = 1234;
+ \\ _ = &x;
\\ var ptr: [*c]c_int = &x;
+ \\ _ = &ptr;
\\ return ptr.*;
\\}
});
@@ -1719,6 +1760,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() c_int {
\\ var x: c_int = undefined;
+ \\ _ = &x;
\\ return ~x;
\\}
});
@@ -1736,8 +1778,11 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() c_int {
\\ var a: c_int = undefined;
+ \\ _ = &a;
\\ var b: f32 = undefined;
+ \\ _ = &b;
\\ var c: ?*anyopaque = undefined;
+ \\ _ = &c;
\\ return @intFromBool(!(a == @as(c_int, 0)));
\\ return @intFromBool(!(a != 0));
\\ return @intFromBool(!(b != 0));
@@ -2051,10 +2096,13 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub extern var c: c_int;
,
\\pub inline fn BASIC(c_1: anytype) @TypeOf(c_1 * @as(c_int, 2)) {
+ \\ _ = &c_1;
\\ return c_1 * @as(c_int, 2);
\\}
,
\\pub inline fn FOO(L: anytype, b: anytype) @TypeOf(L + b) {
+ \\ _ = &L;
+ \\ _ = &b;
\\ return L + b;
\\}
,
@@ -2109,7 +2157,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ var c_1 = arg_c_1;
\\ _ = &c_1;
\\ var a_2: c_int = undefined;
+ \\ _ = &a_2;
\\ var b_3: u8 = 123;
+ \\ _ = &b_3;
\\ b_3 = @as(u8, @bitCast(@as(i8, @truncate(a_2))));
\\ {
\\ var d: c_int = 5;
@@ -2150,7 +2200,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: c_int = undefined;
+ \\ _ = &a;
\\ var b: c_int = undefined;
+ \\ _ = &b;
\\ a = blk: {
\\ const tmp = @as(c_int, 2);
\\ b = tmp;
@@ -2180,11 +2232,13 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() c_int {
\\ var a: c_int = 5;
+ \\ _ = &a;
\\ while (true) {
\\ a = 2;
\\ }
\\ while (true) {
\\ var a_1: c_int = 4;
+ \\ _ = &a_1;
\\ a_1 = 9;
\\ return blk: {
\\ _ = @as(c_int, 6);
@@ -2193,6 +2247,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ }
\\ while (true) {
\\ var a_1: c_int = 2;
+ \\ _ = &a_1;
\\ a_1 = 12;
\\ }
\\ while (true) {
@@ -2214,10 +2269,12 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub export fn foo() void {
\\ {
\\ var i: c_int = 2;
+ \\ _ = &i;
\\ var b: c_int = 4;
\\ _ = &b;
\\ while ((i + @as(c_int, 2)) != 0) : (i = 2) {
\\ var a: c_int = 2;
+ \\ _ = &a;
\\ _ = blk: {
\\ _ = blk_1: {
\\ a = 6;
@@ -2309,7 +2366,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn switch_fn(arg_i: c_int) void {
\\ var i = arg_i;
+ \\ _ = &i;
\\ var res: c_int = 0;
+ \\ _ = &res;
\\ while (true) {
\\ switch (i) {
\\ @as(c_int, 0) => {
@@ -2398,7 +2457,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn max(arg_a: c_int) void {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var tmp: c_int = undefined;
+ \\ _ = &tmp;
\\ tmp = a;
\\ a = tmp;
\\}
@@ -2412,8 +2473,11 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn max(arg_a: c_int) void {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var b: c_int = undefined;
+ \\ _ = &b;
\\ var c: c_int = undefined;
+ \\ _ = &c;
\\ c = blk: {
\\ const tmp = a;
\\ b = tmp;
@@ -2442,6 +2506,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn int_from_float(arg_a: f32) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ return @as(c_int, @intFromFloat(a));
\\}
});
@@ -2505,11 +2570,13 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: c_int = 2;
+ \\ _ = &a;
\\ while (true) {
\\ a = a - @as(c_int, 1);
\\ if (!(a != 0)) break;
\\ }
\\ var b: c_int = 2;
+ \\ _ = &b;
\\ while (true) {
\\ b = b - @as(c_int, 1);
\\ if (!(b != 0)) break;
@@ -2550,21 +2617,37 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub const SomeTypedef = c_int;
\\pub export fn and_or_non_bool(arg_a: c_int, arg_b: f32, arg_c: ?*anyopaque) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var b = arg_b;
+ \\ _ = &b;
\\ var c = arg_c;
+ \\ _ = &c;
\\ var d: enum_Foo = @as(c_uint, @bitCast(FooA));
+ \\ _ = &d;
\\ var e: c_int = @intFromBool((a != 0) and (b != 0));
+ \\ _ = &e;
\\ var f: c_int = @intFromBool((b != 0) and (c != null));
+ \\ _ = &f;
\\ var g: c_int = @intFromBool((a != 0) and (c != null));
+ \\ _ = &g;
\\ var h: c_int = @intFromBool((a != 0) or (b != 0));
+ \\ _ = &h;
\\ var i: c_int = @intFromBool((b != 0) or (c != null));
+ \\ _ = &i;
\\ var j: c_int = @intFromBool((a != 0) or (c != null));
+ \\ _ = &j;
\\ var k: c_int = @intFromBool((a != 0) or (@as(c_int, @bitCast(d)) != 0));
+ \\ _ = &k;
\\ var l: c_int = @intFromBool((@as(c_int, @bitCast(d)) != 0) and (b != 0));
+ \\ _ = &l;
\\ var m: c_int = @intFromBool((c != null) or (d != 0));
+ \\ _ = &m;
\\ var td: SomeTypedef = 44;
+ \\ _ = &td;
\\ var o: c_int = @intFromBool((td != 0) or (b != 0));
+ \\ _ = &o;
\\ var p: c_int = @intFromBool((c != null) and (td != 0));
+ \\ _ = &p;
\\ return (((((((((e + f) + g) + h) + i) + j) + k) + l) + m) + o) + p;
\\}
,
@@ -2604,7 +2687,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn max(arg_a: c_int, arg_b: c_int) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var b = arg_b;
+ \\ _ = &b;
\\ return (a & b) ^ (a | b);
\\}
});
@@ -2623,14 +2708,23 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn test_comparisons(arg_a: c_int, arg_b: c_int) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var b = arg_b;
+ \\ _ = &b;
\\ var c: c_int = @intFromBool(a < b);
+ \\ _ = &c;
\\ var d: c_int = @intFromBool(a > b);
+ \\ _ = &d;
\\ var e: c_int = @intFromBool(a <= b);
+ \\ _ = &e;
\\ var f: c_int = @intFromBool(a >= b);
+ \\ _ = &f;
\\ var g: c_int = @intFromBool(c < d);
+ \\ _ = &g;
\\ var h: c_int = @intFromBool(e < f);
+ \\ _ = &h;
\\ var i: c_int = @intFromBool(g < h);
+ \\ _ = &i;
\\ return i;
\\}
});
@@ -2646,7 +2740,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn max(arg_a: c_int, arg_b: c_int) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var b = arg_b;
+ \\ _ = &b;
\\ if (a == b) return a;
\\ if (a != b) return b;
\\ return a;
@@ -2663,6 +2759,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub const yes = [*c]u8;
\\pub export fn foo() void {
\\ var a: yes = undefined;
+ \\ _ = &a;
\\ if (a != null) {
\\ _ = @as(c_int, 2);
\\ }
@@ -2682,6 +2779,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ return blk: {
\\ var a: c_int = 1;
\\ _ = &a;
+ \\ _ = &a;
\\ break :blk a;
\\ };
\\}
@@ -2707,6 +2805,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub export var b: f32 = 2.0;
\\pub export fn foo() void {
\\ var c: [*c]struct_Foo = undefined;
+ \\ _ = &c;
\\ _ = a.b;
\\ _ = c.*.b;
\\}
@@ -2726,6 +2825,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub export var array: [100]c_int = [1]c_int{0} ** 100;
\\pub export fn foo(arg_index: c_int) c_int {
\\ var index = arg_index;
+ \\ _ = &index;
\\ return array[@as(c_uint, @intCast(index))];
\\}
,
@@ -2740,7 +2840,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: [10]c_int = undefined;
+ \\ _ = &a;
\\ var i: c_int = 0;
+ \\ _ = &i;
\\ a[@as(c_uint, @intCast(i))] = 0;
\\}
});
@@ -2753,7 +2855,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: [10]c_longlong = undefined;
+ \\ _ = &a;
\\ var i: c_longlong = 0;
+ \\ _ = &i;
\\ a[@as(usize, @intCast(i))] = 0;
\\}
});
@@ -2766,7 +2870,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: [10]c_uint = undefined;
+ \\ _ = &a;
\\ var i: c_uint = 0;
+ \\ _ = &i;
\\ a[i] = 0;
\\}
});
@@ -2776,6 +2882,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\int bar(int x) { return x; }
, &[_][]const u8{
\\pub inline fn CALL(arg: anytype) @TypeOf(bar(arg)) {
+ \\ _ = &arg;
\\ return bar(arg);
\\}
});
@@ -2801,7 +2908,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn max(arg_a: c_int, arg_b: c_int) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var b = arg_b;
+ \\ _ = &b;
\\ if ((a < b) or (a == b)) return b;
\\ if ((a >= b) and (a == b)) return a;
\\ return a;
@@ -2823,7 +2932,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn max(arg_a: c_int, arg_b: c_int) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var b = arg_b;
+ \\ _ = &b;
\\ if (a < b) return b;
\\ if (a < b) return b else return a;
\\ if (a < b) {} else {}
@@ -2874,9 +2985,13 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\;
\\pub export fn if_none_bool(arg_a: c_int, arg_b: f32, arg_c: ?*anyopaque, arg_d: enum_SomeEnum) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var b = arg_b;
+ \\ _ = &b;
\\ var c = arg_c;
+ \\ _ = &c;
\\ var d = arg_d;
+ \\ _ = &d;
\\ if (a != 0) return 0;
\\ if (b != 0) return 1;
\\ if (c != null) return 2;
@@ -2904,6 +3019,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn abs(arg_a: c_int) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ return if (a < @as(c_int, 0)) -a else a;
\\}
});
@@ -2924,16 +3040,19 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo1(arg_a: c_uint) c_uint {
\\ var a = arg_a;
+ \\ _ = &a;
\\ a +%= 1;
\\ return a;
\\}
\\pub export fn foo2(arg_a: c_int) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ a += 1;
\\ return a;
\\}
\\pub export fn foo3(arg_a: [*c]c_int) [*c]c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ a += 1;
\\ return a;
\\}
@@ -2959,7 +3078,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\}
\\pub export fn bar() void {
\\ var f: ?*const fn () callconv(.C) void = &foo;
+ \\ _ = &f;
\\ var b: ?*const fn () callconv(.C) c_int = &baz;
+ \\ _ = &b;
\\ f.?();
\\ f.?();
\\ foo();
@@ -2985,7 +3106,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var i: c_int = 0;
+ \\ _ = &i;
\\ var u: c_uint = 0;
+ \\ _ = &u;
\\ i += 1;
\\ i -= 1;
\\ u +%= 1;
@@ -3024,7 +3147,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn log2(arg_a: c_uint) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var i: c_int = 0;
+ \\ _ = &i;
\\ while (a > @as(c_uint, @bitCast(@as(c_int, 0)))) {
\\ a >>= @intCast(@as(c_int, 1));
\\ }
@@ -3044,7 +3169,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn log2(arg_a: u32) c_int {
\\ var a = arg_a;
+ \\ _ = &a;
\\ var i: c_int = 0;
+ \\ _ = &i;
\\ while (a > @as(u32, @bitCast(@as(c_int, 0)))) {
\\ a >>= @intCast(@as(c_int, 1));
\\ }
@@ -3072,7 +3199,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: c_int = 0;
+ \\ _ = &a;
\\ var b: c_uint = 0;
+ \\ _ = &b;
\\ a += blk: {
\\ const ref = &a;
\\ ref.* += @as(c_int, 1);
@@ -3151,6 +3280,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: c_uint = 0;
+ \\ _ = &a;
\\ a +%= blk: {
\\ const ref = &a;
\\ ref.* +%= @as(c_uint, @bitCast(@as(c_int, 1)));
@@ -3210,7 +3340,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var i: c_int = 0;
+ \\ _ = &i;
\\ var u: c_uint = 0;
+ \\ _ = &u;
\\ i += 1;
\\ i -= 1;
\\ u +%= 1;
@@ -3305,6 +3437,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\pub fn bar() callconv(.C) void {}
\\pub export fn foo(arg_baz: ?*const fn () callconv(.C) [*c]c_int) void {
\\ var baz = arg_baz;
+ \\ _ = &baz;
\\ bar();
\\ _ = baz.?();
\\}
@@ -3375,10 +3508,14 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\#define MAX(a, b) ((b) > (a) ? (b) : (a))
, &[_][]const u8{
\\pub inline fn MIN(a: anytype, b: anytype) @TypeOf(if (b < a) b else a) {
+ \\ _ = &a;
+ \\ _ = &b;
\\ return if (b < a) b else a;
\\}
,
\\pub inline fn MAX(a: anytype, b: anytype) @TypeOf(if (b > a) b else a) {
+ \\ _ = &a;
+ \\ _ = &b;
\\ return if (b > a) b else a;
\\}
});
@@ -3390,7 +3527,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo(arg_p: [*c]c_int, arg_x: c_int) c_int {
\\ var p = arg_p;
+ \\ _ = &p;
\\ var x = arg_x;
+ \\ _ = &x;
\\ return blk: {
\\ const tmp = x;
\\ (blk_1: {
@@ -3417,6 +3556,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\}
\\pub export fn bar(arg_x: c_long) c_ushort {
\\ var x = arg_x;
+ \\ _ = &x;
\\ return @as(c_ushort, @bitCast(@as(c_short, @truncate(x))));
\\}
});
@@ -3429,6 +3569,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo(arg_bar_1: c_int) void {
\\ var bar_1 = arg_bar_1;
+ \\ _ = &bar_1;
\\ bar_1 = 2;
\\}
\\pub export var bar: c_int = 4;
@@ -3442,6 +3583,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo(arg_bar_1: c_int) void {
\\ var bar_1 = arg_bar_1;
+ \\ _ = &bar_1;
\\ bar_1 = 2;
\\}
,
@@ -3475,10 +3617,12 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\}
\\pub export fn bar(arg_a: [*c]const c_int) void {
\\ var a = arg_a;
+ \\ _ = &a;
\\ foo(@as([*c]c_int, @ptrCast(@volatileCast(@constCast(a)))));
\\}
\\pub export fn baz(arg_a: [*c]volatile c_int) void {
\\ var a = arg_a;
+ \\ _ = &a;
\\ foo(@as([*c]c_int, @ptrCast(@volatileCast(@constCast(a)))));
\\}
});
@@ -3493,9 +3637,13 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo(arg_x: bool) bool {
\\ var x = arg_x;
+ \\ _ = &x;
\\ var a: bool = @as(c_int, @intFromBool(x)) != @as(c_int, 1);
+ \\ _ = &a;
\\ var b: bool = @as(c_int, @intFromBool(a)) != @as(c_int, 0);
+ \\ _ = &b;
\\ var c: bool = @intFromPtr(&foo) != 0;
+ \\ _ = &c;
\\ return foo(@as(c_int, @intFromBool(c)) != @as(c_int, @intFromBool(b)));
\\}
});
@@ -3506,7 +3654,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\}
, &[_][]const u8{
\\pub export fn max(x: c_int, arg_y: c_int) c_int {
+ \\ _ = &x;
\\ var y = arg_y;
+ \\ _ = &y;
\\ return if (x > y) x else y;
\\}
});
@@ -3567,6 +3717,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\
, &[_][]const u8{
\\pub inline fn DefaultScreen(dpy: anytype) @TypeOf(@import("std").zig.c_translation.cast(_XPrivDisplay, dpy).*.default_screen) {
+ \\ _ = &dpy;
\\ return @import("std").zig.c_translation.cast(_XPrivDisplay, dpy).*.default_screen;
\\}
});
@@ -3809,6 +3960,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ const foo = struct {
\\ var static: struct_FOO = @import("std").mem.zeroes(struct_FOO);
\\ };
+ \\ _ = &foo;
\\ return foo.static.x;
\\}
});
@@ -3830,12 +3982,14 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn bar(arg_x: c_int, arg_y: c_int) c_int {
\\ var x = arg_x;
+ \\ _ = &x;
\\ var y = arg_y;
\\ _ = &y;
\\ return x;
\\}
,
\\pub inline fn FOO(A: anytype, B: anytype) @TypeOf(A) {
+ \\ _ = &A;
\\ _ = &B;
\\ return A;
\\}
@@ -3911,6 +4065,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: c_int = undefined;
+ \\ _ = &a;
\\ if ((blk: {
\\ const tmp = @intFromBool(@as(c_int, 1) > @as(c_int, 0));
\\ a = tmp;
@@ -3929,7 +4084,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: S = undefined;
+ \\ _ = &a;
\\ var b: S = undefined;
+ \\ _ = &b;
\\ var c: c_longlong = @divExact(@as(c_longlong, @bitCast(@intFromPtr(a) -% @intFromPtr(b))), @sizeOf(u8));
\\ _ = &c;
\\}
@@ -3944,7 +4101,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var a: S = undefined;
+ \\ _ = &a;
\\ var b: S = undefined;
+ \\ _ = &b;
\\ var c: c_long = @divExact(@as(c_long, @bitCast(@intFromPtr(a) -% @intFromPtr(b))), @sizeOf(u8));
\\ _ = &c;
\\}
@@ -3973,7 +4132,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var n: c_int = undefined;
+ \\ _ = &n;
\\ var tmp: c_int = 1;
+ \\ _ = &tmp;
\\ if ((blk: {
\\ const tmp_1 = tmp;
\\ n = tmp_1;
@@ -3990,7 +4151,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var tmp: c_int = undefined;
+ \\ _ = &tmp;
\\ var n: c_int = 1;
+ \\ _ = &n;
\\ if ((blk: {
\\ const tmp_1 = n;
\\ tmp = tmp_1;
@@ -4007,7 +4170,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var n: c_int = undefined;
+ \\ _ = &n;
\\ var ref: c_int = 1;
+ \\ _ = &ref;
\\ if ((blk: {
\\ const tmp = blk_1: {
\\ const ref_2 = &ref;
@@ -4028,7 +4193,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var n: c_int = undefined;
+ \\ _ = &n;
\\ var ref: c_int = 1;
+ \\ _ = &ref;
\\ if ((blk: {
\\ const tmp = blk_1: {
\\ const ref_2 = &ref;
@@ -4050,7 +4217,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var n: c_int = undefined;
+ \\ _ = &n;
\\ var ref: c_int = 1;
+ \\ _ = &ref;
\\ if ((blk: {
\\ const ref_1 = &n;
\\ ref_1.* += ref;
@@ -4067,7 +4236,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var ref: c_int = undefined;
+ \\ _ = &ref;
\\ var n: c_int = 1;
+ \\ _ = &n;
\\ if ((blk: {
\\ const ref_1 = &ref;
\\ ref_1.* += n;
@@ -4085,8 +4256,11 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var f: c_int = 1;
+ \\ _ = &f;
\\ var n: c_int = undefined;
+ \\ _ = &n;
\\ var cond_temp: c_int = 1;
+ \\ _ = &cond_temp;
\\ if ((blk: {
\\ const tmp = blk_1: {
\\ const cond_temp_2 = cond_temp;
@@ -4107,8 +4281,11 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn foo() void {
\\ var cond_temp: c_int = 1;
+ \\ _ = &cond_temp;
\\ var n: c_int = undefined;
+ \\ _ = &n;
\\ var f: c_int = 1;
+ \\ _ = &f;
\\ if ((blk: {
\\ const tmp = blk_1: {
\\ const cond_temp_2 = f;
@@ -4149,6 +4326,7 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
, &[_][]const u8{
\\pub export fn somefunc() void {
\\ var y: c_int = undefined;
+ \\ _ = &y;
\\ _ = blk: {
\\ y = 1;
\\ };
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-27 22:50:16 +0000