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add runtime safety tests for SIMD integer division

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This commit is contained in:
Andrew Kelley 2020-04-05 17:44:34 -04:00
parent f6cdc94a50
commit 5597b11a52
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1 changed files with 43 additions and 0 deletions
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43
test/runtime_safety.zig
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@ -505,6 +505,21 @@ pub fn addCases(cases: *tests.CompareOutputContext) void {
\\}
);
cases.addRuntimeSafety("signed integer division overflow - vectors",
\\pub fn panic(message: []const u8, stack_trace: ?*@import("builtin").StackTrace) noreturn {
\\ @import("std").os.exit(126);
\\}
\\pub fn main() !void {
\\ var a: @Vector(4, i16) = [_]i16{ 1, 2, -32768, 4 };
\\ var b: @Vector(4, i16) = [_]i16{ 1, 2, -1, 4 };
\\ const x = div(a, b);
\\ if (x[2] == 32767) return error.Whatever;
\\}
\\fn div(a: @Vector(4, i16), b: @Vector(4, i16)) @Vector(4, i16) {
\\ return @divTrunc(a, b);
\\}
);
cases.addRuntimeSafety("signed shift left overflow",
\\pub fn panic(message: []const u8, stack_trace: ?*@import("builtin").StackTrace) noreturn {
\\ @import("std").os.exit(126);
@ -569,6 +584,20 @@ pub fn addCases(cases: *tests.CompareOutputContext) void {
\\}
);
cases.addRuntimeSafety("integer division by zero - vectors",
\\pub fn panic(message: []const u8, stack_trace: ?*@import("builtin").StackTrace) noreturn {
\\ @import("std").os.exit(126);
\\}
\\pub fn main() void {
\\ var a: @Vector(4, i32) = [4]i32{111, 222, 333, 444};
\\ var b: @Vector(4, i32) = [4]i32{111, 0, 333, 444};
\\ const x = div0(a, b);
\\}
\\fn div0(a: @Vector(4, i32), b: @Vector(4, i32)) @Vector(4, i32) {
\\ return @divTrunc(a, b);
\\}
);
cases.addRuntimeSafety("exact division failure",
\\pub fn panic(message: []const u8, stack_trace: ?*@import("builtin").StackTrace) noreturn {
\\ @import("std").os.exit(126);
@ -582,6 +611,20 @@ pub fn addCases(cases: *tests.CompareOutputContext) void {
\\}
);
cases.addRuntimeSafety("exact division failure - vectors",
\\pub fn panic(message: []const u8, stack_trace: ?*@import("builtin").StackTrace) noreturn {
\\ @import("std").os.exit(126);
\\}
\\pub fn main() !void {
\\ var a: @Vector(4, i32) = [4]i32{111, 222, 333, 444};
\\ var b: @Vector(4, i32) = [4]i32{111, 222, 333, 441};
\\ const x = divExact(a, b);
\\}
\\fn divExact(a: @Vector(4, i32), b: @Vector(4, i32)) @Vector(4, i32) {
\\ return @divExact(a, b);
\\}
);
cases.addRuntimeSafety("cast []u8 to bigger slice of wrong size",
\\const std = @import("std");
\\pub fn panic(message: []const u8, stack_trace: ?*std.builtin.StackTrace) noreturn {