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binutils coff type list

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As for commit 72d225ef9c, handle type numbers starting anywhere.

	PR 17512
	* rdcoff.c (struct coff_slots): Add base_index.
	(coff_get_slot): Delete pr17512 excessively large slot check.
	Don't allocate entire array from 0 to type number, allocate a
	sparse array.
This commit is contained in:
Alan Modra
2023-03-03 09:13:03 +10:30
parent 425ec1add7
commit de357ff4e4
1 changed files with 12 additions and 18 deletions
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30
binutils/rdcoff.c
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@@ -68,6 +68,8 @@ struct coff_slots
{
/* Next set of slots. */
struct coff_slots *next;
/* Where the SLOTS array starts. */
unsigned int base_index;
/* Slots. */
#define COFF_SLOTS (16)
debug_type slots[COFF_SLOTS];
@@ -107,29 +109,21 @@ static debug_type *
coff_get_slot (struct coff_types *types, long indx)
{
struct coff_slots **pps;
unsigned int base_index;
pps = &types->slots;
base_index = indx / COFF_SLOTS * COFF_SLOTS;
indx -= base_index;
/* PR 17512: file: 078-18333-0.001:0.1.
FIXME: The value of 1000 is a guess. Maybe a better heuristic is needed. */
if (indx / COFF_SLOTS > 1000)
fatal (_("Excessively large slot index: %lx"), indx);
while (*pps && (*pps)->base_index < base_index)
pps = &(*pps)->next;
while (indx >= COFF_SLOTS)
if (*pps == NULL || (*pps)->base_index != base_index)
{
if (*pps == NULL)
{
*pps = (struct coff_slots *) xmalloc (sizeof **pps);
memset (*pps, 0, sizeof **pps);
}
pps = &(*pps)->next;
indx -= COFF_SLOTS;
}
if (*pps == NULL)
{
*pps = (struct coff_slots *) xmalloc (sizeof **pps);
memset (*pps, 0, sizeof **pps);
struct coff_slots *n = xcalloc (1, sizeof (*n));
n->next = *pps;
n->base_index = base_index;
*pps = n;
}
return (*pps)->slots + indx;