diff options
Diffstat (limited to 'src/pkg/image/png/reader.go')
| -rw-r--r-- | src/pkg/image/png/reader.go | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/pkg/image/png/reader.go b/src/pkg/image/png/reader.go index a6bf86ede..dfe299102 100644 --- a/src/pkg/image/png/reader.go +++ b/src/pkg/image/png/reader.go @@ -505,8 +505,14 @@ func (d *decoder) decode() (image.Image, error) { } // Check for EOF, to verify the zlib checksum. - n, err := r.Read(pr[:1]) - if err != io.EOF { + n := 0 + for i := 0; n == 0 && err == nil; i++ { + if i == 100 { + return nil, io.ErrNoProgress + } + n, err = r.Read(pr[:1]) + } + if err != nil && err != io.EOF { return nil, FormatError(err.Error()) } if n != 0 || d.idatLength != 0 { |