diff options
Diffstat (limited to 'src/debug/dwarf')
| -rw-r--r-- | src/debug/dwarf/line.go | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/debug/dwarf/line.go b/src/debug/dwarf/line.go index bb281fbdd9..4df4a1751f 100644 --- a/src/debug/dwarf/line.go +++ b/src/debug/dwarf/line.go @@ -215,7 +215,11 @@ func (r *LineReader) readHeader(compDir string) error { } else { headerLength = Offset(buf.uint32()) } - r.programOffset = buf.off + headerLength + programOffset := buf.off + headerLength + if programOffset > r.endOffset { + return DecodeError{"line", hdrOffset, fmt.Sprintf("malformed line table: program offset %d exceeds end offset %d", programOffset, r.endOffset)} + } + r.programOffset = programOffset r.minInstructionLength = int(buf.uint8()) if r.version >= 4 { // [DWARF4 6.2.4] |