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link.Coff: skip redundant (and invalid) copy to same path

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Andrew Kelley
2020-09-29 21:48:50 -07:00
parent 7bffa6f1fb
commit 839bdfdc93
1 changed files with 5 additions and 1 deletions
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6
src/link/Coff.zig
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@@ -893,7 +893,11 @@ fn linkWithLLD(self: *Coff, comp: *Compilation) !void {
// regarding eliding redundant object -> object transformations.
return error.NoObjectsToLink;
};
try fs.cwd().copyFile(the_object_path, fs.cwd(), full_out_path, .{});
// This can happen when using --enable-cache and using the stage1 backend. In this case
// we can skip the file copy.
if (!mem.eql(u8, the_object_path, full_out_path)) {
try fs.cwd().copyFile(the_object_path, fs.cwd(), full_out_path, .{});
}
} else {
// Create an LLD command line and invoke it.
var argv = std.ArrayList([]const u8).init(self.base.allocator);