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process.totalSystemMemory: Avoid overflow on Linux when totalram is a 32-bit usize

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Fixes #25038
This commit is contained in:
Ryan Liptak 2025-08-27 22:16:21 -07:00 • committed by Alex Rønne Petersen
parent 2b73c28cec
commit 224fca7e0e
1 changed files with 2 additions and 1 deletions
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3
lib/std/process.zig
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@ -1753,7 +1753,8 @@ pub fn totalSystemMemory() TotalSystemMemoryError!u64 {
if (std.os.linux.E.init(result) != .SUCCESS) {
return error.UnknownTotalSystemMemory;
}
return info.totalram * info.mem_unit;
// Promote to u64 to avoid overflow on systems where info.totalram is a 32-bit usize
return @as(u64, info.totalram) * info.mem_unit;
},
.freebsd => {
var physmem: c_ulong = undefined;