diff options
Diffstat (limited to 'gcc/asan.cc')
| -rw-r--r-- | gcc/asan.cc | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/gcc/asan.cc b/gcc/asan.cc index 7c57cbca99c..ef59b77ebc2 100644 --- a/gcc/asan.cc +++ b/gcc/asan.cc @@ -1497,10 +1497,14 @@ asan_redzone_buffer::emit_redzone_byte (HOST_WIDE_INT offset, HOST_WIDE_INT off = m_prev_offset + ASAN_SHADOW_GRANULARITY * m_shadow_bytes.length (); if (off == offset) + /* Consecutive shadow memory byte. */; + else if (offset < m_prev_offset + (HOST_WIDE_INT) (ASAN_SHADOW_GRANULARITY + * RZ_BUFFER_SIZE) + && !m_shadow_bytes.is_empty ()) { - /* Consecutive shadow memory byte. */ - m_shadow_bytes.safe_push (value); - flush_if_full (); + /* Shadow memory byte with a small gap. */ + for (; off < offset; off += ASAN_SHADOW_GRANULARITY) + m_shadow_bytes.safe_push (0); } else { @@ -1521,9 +1525,9 @@ asan_redzone_buffer::emit_redzone_byte (HOST_WIDE_INT offset, m_shadow_mem = adjust_address (m_shadow_mem, VOIDmode, diff >> ASAN_SHADOW_SHIFT); m_prev_offset = offset; - m_shadow_bytes.safe_push (value); - flush_if_full (); } + m_shadow_bytes.safe_push (value); + flush_if_full (); } /* Emit RTX emission of the content of the buffer. */ |