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2009-10-22 Paul Pluzhnikov <ppluzhnikov@google.com>

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PR gdb/10819
	* dwarf2-frame.c (find_cie): Don't call bsearch on empty cie_table.
	* objfiles.c (find_pc_section): Likewise.
	(update_section_map): Don't allocate empty table.
This commit is contained in:
Paul Pluzhnikov
2009-10-22 20:20:27 +00:00
parent 02506ff1ad
commit 65a97ab329
3 changed files with 31 additions and 0 deletions
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7
gdb/ChangeLog
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@ -1,3 +1,10 @@
2009-10-22 Paul Pluzhnikov <ppluzhnikov@google.com>
PR gdb/10819
* dwarf2-frame.c (find_cie): Don't call bsearch on empty cie_table.
* objfiles.c (find_pc_section): Likewise.
(update_section_map): Don't allocate empty table.
2009-10-16 Hui Zhu <teawater@gmail.com> 2009-10-16 Hui Zhu <teawater@gmail.com>
Michael Snyder <msnyder@msnyder-server.eng.vmware.com> Michael Snyder <msnyder@msnyder-server.eng.vmware.com>

8
gdb/dwarf2-frame.c
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@ -1525,6 +1525,14 @@ find_cie (struct dwarf2_cie_table *cie_table, ULONGEST cie_pointer)
{ {
struct dwarf2_cie **p_cie; struct dwarf2_cie **p_cie;
/* The C standard (ISO/IEC 9899:TC2) requires the BASE argument to
bsearch be non-NULL. */
if (cie_table->entries == NULL)
{
gdb_assert (cie_table->num_entries == 0);
return NULL;
}
p_cie = bsearch (&cie_pointer, cie_table->entries, cie_table->num_entries, p_cie = bsearch (&cie_pointer, cie_table->entries, cie_table->num_entries,
sizeof (cie_table->entries[0]), bsearch_cie_cmp); sizeof (cie_table->entries[0]), bsearch_cie_cmp);
if (p_cie != NULL) if (p_cie != NULL)

16
gdb/objfiles.c
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@ -1113,6 +1113,14 @@ update_section_map (struct program_space *pspace,
if (insert_section_p (objfile->obfd, s->the_bfd_section)) if (insert_section_p (objfile->obfd, s->the_bfd_section))
alloc_size += 1; alloc_size += 1;
/* This happens on detach/attach (e.g. in gdb.base/attach.exp). */
if (alloc_size == 0)
{
*pmap = NULL;
*pmap_size = 0;
return;
}
map = xmalloc (alloc_size * sizeof (*map)); map = xmalloc (alloc_size * sizeof (*map));
i = 0; i = 0;
@ -1175,6 +1183,14 @@ find_pc_section (CORE_ADDR pc)
pspace_info->objfiles_changed_p = 0; pspace_info->objfiles_changed_p = 0;
} }
/* The C standard (ISO/IEC 9899:TC2) requires the BASE argument to
bsearch be non-NULL. */
if (pspace_info->sections == NULL)
{
gdb_assert (pspace_info->num_sections == 0);
return NULL;
}
sp = (struct obj_section **) bsearch (&pc, sp = (struct obj_section **) bsearch (&pc,
pspace_info->sections, pspace_info->sections,
pspace_info->num_sections, pspace_info->num_sections,