diff options
Diffstat (limited to 'gold/dwarf_reader.cc')
| -rw-r--r-- | gold/dwarf_reader.cc | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/gold/dwarf_reader.cc b/gold/dwarf_reader.cc index ec697e4..3d0f65a 100644 --- a/gold/dwarf_reader.cc +++ b/gold/dwarf_reader.cc @@ -32,7 +32,7 @@ #include "reloc.h" #include "dwarf_reader.h" -namespace { +namespace gold { // Read an unsigned LEB128 number. Each byte contains 7 bits of // information, plus one bit saying whether the number continues or @@ -48,6 +48,12 @@ read_unsigned_LEB_128(const unsigned char* buffer, size_t* len) do { + if (num_read >= 64 / 7) + { + gold_warning(_("Unusually large LEB128 decoded, " + "debug information may be corrupted")); + break; + } byte = *buffer++; num_read++; result |= (static_cast<uint64_t>(byte & 0x7f)) << shift; @@ -73,6 +79,12 @@ read_signed_LEB_128(const unsigned char* buffer, size_t* len) do { + if (num_read >= 64 / 7) + { + gold_warning(_("Unusually large LEB128 decoded, " + "debug information may be corrupted")); + break; + } byte = *buffer++; num_read++; result |= (static_cast<uint64_t>(byte & 0x7f) << shift); @@ -86,11 +98,6 @@ read_signed_LEB_128(const unsigned char* buffer, size_t* len) return result; } -} // End anonymous namespace. - - -namespace gold { - // This is the format of a DWARF2/3 line state machine that we process // opcodes using. There is no need for anything outside the lineinfo // processor to know how this works. |