Seeking to offset=length results in The requested range 'bytes=N--1' is not satisfiable error

[WGH-]

If you seek to an offset exactly equal to length, subsequent read will return rather unexpected "Requested Range Not Satisfiable" error instead of either io.EOF or empty data.

I think these strict inequalities should be replaced with greater-or-equal to fix this bug:

minio-go/api-get-object.go

Lines 567 to 576 in f4c4350

	case 0:
	if o.objectInfo.Size > -1 && offset > o.objectInfo.Size {
	return 0, io.EOF
	}
	newOffset = offset
	case 1:
	if o.objectInfo.Size > -1 && o.currOffset+offset > o.objectInfo.Size {
	return 0, io.EOF
	}
	newOffset += offset

Somewhat related to #2155: changing the library to allow past-the-end seeks will fix this as well.

HEAD /XXX/logs/1 HTTP/1.1
Host: 127.0.0.1:9000
User-Agent: MinIO (linux; amd64) minio-go/v7.0.74
Authorization: AWS4-HMAC-SHA256 Credential=XXX/20251009/us-east-1/s3/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=ac2c05657ab592d24c7d43d3de32fd7cfd716746bf2dcce364aa53cd4ac11a3f
X-Amz-Content-Sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
X-Amz-Date: 20251009T231603Z


HTTP/1.1 200 OK
Accept-Ranges: bytes
Content-Length: 6306
Content-Type: text/plain
ETag: "2d9df643507c5e8a783a4a57818e305f"
Last-Modified: Thu, 09 Oct 2025 17:39:48 GMT
Server: MinIO
Strict-Transport-Security: max-age=31536000; includeSubDomains
Vary: Origin
Vary: Accept-Encoding
X-Amz-Id-2: dd9025bab4ad464b049177c95eb6ebf374d3b3fd1af9251148b658df7ac2e3e8
X-Amz-Request-Id: 186CF5C11188BB95
X-Content-Type-Options: nosniff
X-Ratelimit-Limit: 5592
X-Ratelimit-Remaining: 5592
X-Xss-Protection: 1; mode=block
Date: Thu, 09 Oct 2025 23:16:03 GMT


GET /XXX/logs/1 HTTP/1.1
Host: 127.0.0.1:9000
User-Agent: MinIO (linux; amd64) minio-go/v7.0.74
Authorization: AWS4-HMAC-SHA256 Credential=XXX/20251009/us-east-1/s3/aws4_request, SignedHeaders=host;if-match;range;x-amz-content-sha256;x-amz-date, Signature=ae7d08cfd2339e23fed2d5e8b25dd34bc38c02b776d70e6add61462c3332e02a
If-Match: "2d9df643507c5e8a783a4a57818e305f"
Range: bytes=6306-
X-Amz-Content-Sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
X-Amz-Date: 20251009T231603Z


HTTP/1.1 416 Requested Range Not Satisfiable
Accept-Ranges: bytes
Content-Length: 448
Content-Type: application/xml
Server: MinIO
Strict-Transport-Security: max-age=31536000; includeSubDomains
Vary: Origin
Vary: Accept-Encoding
X-Amz-Id-2: dd9025bab4ad464b049177c95eb6ebf374d3b3fd1af9251148b658df7ac2e3e8
X-Amz-Request-Id: 186CF5C1119FAF1C
X-Content-Type-Options: nosniff
X-Ratelimit-Limit: 5592
X-Ratelimit-Remaining: 5592
X-Xss-Protection: 1; mode=block
Date: Thu, 09 Oct 2025 23:16:03 GMT

<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>InvalidRange</Code><Message>The requested range &#39;bytes=6306--1&#39; is not satisfiable</Message><Key>logs/1</Key><BucketName>XXX</BucketName><Resource>/XXX/logs/1</Resource><RequestId>186CF5C1119FAF1C</RequestId><HostId>dd9025bab4ad464b049177c95eb6ebf374d3b3fd1af9251148b658df7ac2e3e8</HostId><ActualObjectSize>6306</ActualObjectSize><RangeRequested>6306--1</RangeRequested></Error>