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std.zig.system.NativeTargetInfo: more headroom for libc.so.6 .dynstr

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This commit is contained in:
Andrew Kelley 2022-09-09 09:27:02 -07:00
parent c7d6048081
commit 68e61bbc0c
1 changed files with 3 additions and 3 deletions
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6
lib/std/zig/system/NativeTargetInfo.zig
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@ -552,14 +552,14 @@ fn glibcVerFromSoFile(file: fs.File) !std.builtin.Version {
// and furthermore, that the system-installed glibc is at minimum that version.
// Empirically, glibc 2.34 libc.so .dynstr section is 32441 bytes on my system.
// Here I use this value plus some headroom. This makes it only need
// Here I use double this value plus some headroom. This makes it only need
// a single read syscall here.
var buf: [40000]u8 = undefined;
var buf: [80000]u8 = undefined;
if (buf.len < dynstr.size) return error.InvalidGnuLibCVersion;
const dynstr_size = @intCast(usize, dynstr.size);
const dynstr_bytes = buf[0..dynstr_size];
_ = try preadMin(file, dynstr_bytes, dynstr.offset, dynstr_size);
_ = try preadMin(file, dynstr_bytes, dynstr.offset, dynstr_bytes.len);
var it = mem.split(u8, dynstr_bytes, &.{0});
var max_ver: std.builtin.Version = .{ .major = 2, .minor = 2, .patch = 5 };
while (it.next()) |s| {