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test: parse WSL kernel version without error #24042

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test: parse WSL kernel version without error #24042

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17 changes: 16 additions & 1 deletion lib/std/os/linux/IoUring.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -4065,7 +4065,22 @@ inline fn skipKernelLessThan(required: std.SemanticVersion) !void {
const release = mem.sliceTo(&uts.release, 0);
// Strips potential extra, as kernel version might not be semver compliant, example "6.8.9-300.fc40.x86_64"
const extra_index = std.mem.indexOfAny(u8, release, "-+");
const stripped = release[0..(extra_index orelse release.len)];

// Also strips the string after the third dot because examples exist such as "6.6.87.1-microsoft-standard-WSL2"
var dot_count: usize = 0;
var index: usize = 0;
var third_dot_index: ?usize = null;
while (std.mem.indexOfScalar(u8, release[index..], '.')) |addend| {
index += addend;
dot_count += 1;
if (dot_count == 3) {
third_dot_index = index;
break;
}
index += 1;
}

const stripped = release[0..(@min(extra_index orelse release.len, third_dot_index orelse release.len))];
// Make sure the input don't rely on the extra we just stripped
try testing.expect(required.pre == null and required.build == null);

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