|
 |
381f6c |
--- binutils.orig/bfd/dwarf2.c 2018-05-01 13:04:35.055041935 +0100
|
|
|
381f6c |
+++ binutils-2.30/bfd/dwarf2.c 2018-05-01 13:31:32.882624448 +0100
|
|
|
381f6c |
@@ -622,14 +622,24 @@ read_8_bytes (bfd *abfd, bfd_byte *buf,
|
|
|
381f6c |
}
|
|
|
381f6c |
|
|
|
381f6c |
static bfd_byte *
|
|
|
381f6c |
-read_n_bytes (bfd *abfd ATTRIBUTE_UNUSED,
|
|
|
381f6c |
- bfd_byte *buf,
|
|
|
381f6c |
- bfd_byte *end,
|
|
|
381f6c |
- unsigned int size ATTRIBUTE_UNUSED)
|
|
|
381f6c |
-{
|
|
|
381f6c |
- if (buf + size > end)
|
|
|
381f6c |
- return NULL;
|
|
|
381f6c |
- return buf;
|
|
|
381f6c |
+read_n_bytes (bfd_byte * buf,
|
|
|
381f6c |
+ bfd_byte * end,
|
|
|
381f6c |
+ struct dwarf_block * block)
|
|
|
381f6c |
+{
|
|
|
381f6c |
+ unsigned int size = block->size;
|
|
|
381f6c |
+ bfd_byte * block_end = buf + size;
|
|
|
381f6c |
+
|
|
|
381f6c |
+ if (block_end > end || block_end < buf)
|
|
|
381f6c |
+ {
|
|
|
381f6c |
+ block->data = NULL;
|
|
|
381f6c |
+ block->size = 0;
|
|
|
381f6c |
+ return end;
|
|
|
381f6c |
+ }
|
|
|
381f6c |
+ else
|
|
|
381f6c |
+ {
|
|
|
381f6c |
+ block->data = buf;
|
|
|
381f6c |
+ return block_end;
|
|
|
381f6c |
+ }
|
|
|
381f6c |
}
|
|
|
381f6c |
|
|
|
381f6c |
/* Scans a NUL terminated string starting at BUF, returning a pointer to it.
|
|
|
381f6c |
@@ -1127,8 +1137,7 @@ read_attribute_value (struct attribute *
|
|
|
381f6c |
return NULL;
|
|
|
381f6c |
blk->size = read_2_bytes (abfd, info_ptr, info_ptr_end);
|
|
|
381f6c |
info_ptr += 2;
|
|
|
381f6c |
- blk->data = read_n_bytes (abfd, info_ptr, info_ptr_end, blk->size);
|
|
|
381f6c |
- info_ptr += blk->size;
|
|
|
381f6c |
+ info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk);
|
|
|
381f6c |
attr->u.blk = blk;
|
|
|
381f6c |
break;
|
|
|
381f6c |
case DW_FORM_block4:
|
|
|
381f6c |
@@ -1138,8 +1147,7 @@ read_attribute_value (struct attribute *
|
|
|
381f6c |
return NULL;
|
|
|
381f6c |
blk->size = read_4_bytes (abfd, info_ptr, info_ptr_end);
|
|
|
381f6c |
info_ptr += 4;
|
|
|
381f6c |
- blk->data = read_n_bytes (abfd, info_ptr, info_ptr_end, blk->size);
|
|
|
381f6c |
- info_ptr += blk->size;
|
|
|
381f6c |
+ info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk);
|
|
|
381f6c |
attr->u.blk = blk;
|
|
|
381f6c |
break;
|
|
|
381f6c |
case DW_FORM_data2:
|
|
|
381f6c |
@@ -1179,8 +1187,7 @@ read_attribute_value (struct attribute *
|
|
|
381f6c |
blk->size = _bfd_safe_read_leb128 (abfd, info_ptr, &bytes_read,
|
|
|
381f6c |
FALSE, info_ptr_end);
|
|
|
381f6c |
info_ptr += bytes_read;
|
|
|
381f6c |
- blk->data = read_n_bytes (abfd, info_ptr, info_ptr_end, blk->size);
|
|
|
381f6c |
- info_ptr += blk->size;
|
|
|
381f6c |
+ info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk);
|
|
|
381f6c |
attr->u.blk = blk;
|
|
|
381f6c |
break;
|
|
|
381f6c |
case DW_FORM_block1:
|
|
|
381f6c |
@@ -1190,8 +1197,7 @@ read_attribute_value (struct attribute *
|
|
|
381f6c |
return NULL;
|
|
|
381f6c |
blk->size = read_1_byte (abfd, info_ptr, info_ptr_end);
|
|
|
381f6c |
info_ptr += 1;
|
|
|
381f6c |
- blk->data = read_n_bytes (abfd, info_ptr, info_ptr_end, blk->size);
|
|
|
381f6c |
- info_ptr += blk->size;
|
|
|
381f6c |
+ info_ptr = read_n_bytes (info_ptr, info_ptr_end, blk);
|
|
|
381f6c |
attr->u.blk = blk;
|
|
|
381f6c |
break;
|
|
|
381f6c |
case DW_FORM_data1:
|