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unwind-dw2-fde.c (fde_unencoded_compare): Replace type punning assignments with memcpy calls.

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* unwind-dw2-fde.c (fde_unencoded_compare): Replace type punning
	assignments with memcpy calls.
	(add_fdes): Likewise.
	(binary_search_unencoded_fdes): Likewise.
	(linear_search_fdes): Eliminate type puns.

From-SVN: r147705
This commit is contained in:
Ben Elliston 2009-05-19 13:24:30 +00:00 committed by Ben Elliston
parent 377f099ab8
commit ce883f549b
2 changed files with 21 additions and 7 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2009-05-19 Ben Elliston <bje@au.ibm.com>
* unwind-dw2-fde.c (fde_unencoded_compare): Replace type punning
assignments with memcpy calls.
(add_fdes): Likewise.
(binary_search_unencoded_fdes): Likewise.
(linear_search_fdes): Eliminate type puns.
2009-05-19 Richard Guenther <rguenther@suse.de>
* tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Do

20
gcc/unwind-dw2-fde.c
View File

@ -318,8 +318,9 @@ static int
fde_unencoded_compare (struct object *ob __attribute__((unused)),
const fde *x, const fde *y)
{
const _Unwind_Ptr x_ptr = *(const _Unwind_Ptr *) x->pc_begin;
const _Unwind_Ptr y_ptr = *(const _Unwind_Ptr *) y->pc_begin;
_Unwind_Ptr x_ptr, y_ptr;
memcpy (&x_ptr, x->pc_begin, sizeof (_Unwind_Ptr));
memcpy (&y_ptr, y->pc_begin, sizeof (_Unwind_Ptr));
if (x_ptr > y_ptr)
return 1;
@ -674,7 +675,9 @@ add_fdes (struct object *ob, struct fde_accumulator *accu, const fde *this_fde)
if (encoding == DW_EH_PE_absptr)
{
if (*(const _Unwind_Ptr *) this_fde->pc_begin == 0)
_Unwind_Ptr ptr;
memcpy (&ptr, this_fde->pc_begin, sizeof (_Unwind_Ptr));
if (ptr == 0)
continue;
}
else
@ -792,8 +795,9 @@ linear_search_fdes (struct object *ob, const fde *this_fde, void *pc)
if (encoding == DW_EH_PE_absptr)
{
pc_begin = ((const _Unwind_Ptr *) this_fde->pc_begin)[0];
pc_range = ((const _Unwind_Ptr *) this_fde->pc_begin)[1];
const _Unwind_Ptr *pc_array = (const _Unwind_Ptr *) this_fde->pc_begin;
pc_begin = pc_array[0];
pc_range = pc_array[1];
if (pc_begin == 0)
continue;
}
@ -840,8 +844,10 @@ binary_search_unencoded_fdes (struct object *ob, void *pc)
{
size_t i = (lo + hi) / 2;
const fde *const f = vec->array[i];
const void *pc_begin = ((const void *const*) f->pc_begin)[0];
const uaddr pc_range = ((const uaddr *) f->pc_begin)[1];
void *pc_begin;
uaddr pc_range;
memcpy (&pc_begin, (const void * const *) f->pc_begin, sizeof (void *));
memcpy (&pc_range, (const uaddr *) f->pc_begin + 1, sizeof (uaddr));
if (pc < pc_begin)
hi = i;