diff options
Diffstat (limited to 'bfd/coffcode.h')
| -rw-r--r-- | bfd/coffcode.h | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/bfd/coffcode.h b/bfd/coffcode.h index cfa1a40567..59bb223521 100644 --- a/bfd/coffcode.h +++ b/bfd/coffcode.h @@ -3629,8 +3629,29 @@ coff_write_object_contents (bfd * abfd) len = strlen (current->name); if (len > SCNNMLEN) { - memset (section.s_name, 0, SCNNMLEN); - sprintf (section.s_name, "/%lu", (unsigned long) string_size); + /* The s_name field is defined to be NUL-padded but need not be + NUL-terminated. We use a temporary buffer so that we can still + sprintf all eight chars without splatting a terminating NUL + over the first byte of the following member (s_paddr). */ + char s_name_buf[SCNNMLEN + 1]; + + /* An inherent limitation of the /nnnnnnn notation used to indicate + the offset of the long name in the string table is that we + cannot address entries beyone the ten million byte boundary. */ + if (string_size >= 10000000) + { + bfd_set_error (bfd_error_file_too_big); + (*_bfd_error_handler) + (_("%B: section %s: string table overflow at offset %ld"), + abfd, current->name, string_size); + return FALSE; + } + + /* snprintf not strictly necessary now we've verified the value + has less than eight ASCII digits, but never mind. */ + snprintf (s_name_buf, SCNNMLEN + 1, "/%lu", (unsigned long) string_size); + /* Then strncpy takes care of any padding for us. */ + strncpy (section.s_name, s_name_buf, SCNNMLEN); string_size += len + 1; long_section_names = TRUE; } |