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* dwarf2read.c (dwarf2_get_pc_bounds): Complain if offset

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associated with DW_AT_ranges attribute is out of bounds.
This commit is contained in:
Kevin Buettner
2003-09-15 17:19:23 +00:00
parent b3cacbee3f
commit a604369a85
2 changed files with 14 additions and 1 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2003-09-15 Kevin Buettner <kevinb@redhat.com>
* dwarf2read.c (dwarf2_get_pc_bounds): Complain if offset
associated with DW_AT_ranges attribute is out of bounds.
2003-09-15 David Lecomber <dsl@sources.redhat.com> 2003-09-15 David Lecomber <dsl@sources.redhat.com>
* f-valprint.c: Apply array element printing limits to multi-dimensional arrays * f-valprint.c: Apply array element printing limits to multi-dimensional arrays

10
gdb/dwarf2read.c
View File

@ -2314,7 +2314,7 @@ dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc,
unsigned int addr_size = cu_header->addr_size; unsigned int addr_size = cu_header->addr_size;
CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1));
/* Value of the DW_AT_ranges attribute is the offset in the /* Value of the DW_AT_ranges attribute is the offset in the
.debug_renges section. */ .debug_ranges section. */
unsigned int offset = DW_UNSND (attr); unsigned int offset = DW_UNSND (attr);
/* Base address selection entry. */ /* Base address selection entry. */
CORE_ADDR base; CORE_ADDR base;
@ -2327,6 +2327,14 @@ dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc,
found_base = cu_header->base_known; found_base = cu_header->base_known;
base = cu_header->base_address; base = cu_header->base_address;
if (offset >= dwarf_ranges_size)
{
complaint (&symfile_complaints,
"Offset %d out of bounds for DW_AT_ranges attribute",
offset);
return 0;
}
buffer = dwarf_ranges_buffer + offset; buffer = dwarf_ranges_buffer + offset;
/* Read in the largest possible address. */ /* Read in the largest possible address. */