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re PR middle-end/65680 (ICE at -O1 and above on x86_64-linux-gnu in expand_assignment, at expr.c:4830)

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PR middle-end/65680
	* expr.c (get_inner_reference): Handle bit_offset that doesn't fit
	into signed HOST_WIDE_INT the same as negative bit_offset.

	* gcc.c-torture/compile/pr65680.c: New test.

From-SVN: r221899
This commit is contained in:
Jakub Jelinek 2015-04-07 16:34:06 +02:00 committed by Jakub Jelinek
parent 440f9408ea
commit dcc72b9e73
4 changed files with 32 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2015-04-07 Jakub Jelinek <jakub@redhat.com>
PR middle-end/65680
* expr.c (get_inner_reference): Handle bit_offset that doesn't fit
into signed HOST_WIDE_INT the same as negative bit_offset.
2015-04-07 Ilya Enkovich <ilya.enkovich@intel.com>
* ipa-comdats.c (ipa_comdats): Visit all thunks

2
gcc/expr.c
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@ -6941,7 +6941,7 @@ get_inner_reference (tree exp, HOST_WIDE_INT *pbitsize,
if (offset)
{
/* Avoid returning a negative bitpos as this may wreak havoc later. */
if (wi::neg_p (bit_offset))
if (wi::neg_p (bit_offset) || !wi::fits_shwi_p (bit_offset))
{
offset_int mask = wi::mask <offset_int> (LOG2_BITS_PER_UNIT, false);
offset_int tem = bit_offset.and_not (mask);

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2015-04-07 Jakub Jelinek <jakub@redhat.com>
PR middle-end/65680
* gcc.c-torture/compile/pr65680.c: New test.
2015-04-07 Andre Vehreschild <vehre@gmx.de>
PR fortran/65548

20
gcc/testsuite/gcc.c-torture/compile/pr65680.c Normal file
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@ -0,0 +1,20 @@
/* PR middle-end/65680 */
/* { dg-do compile { target lp64 } } */
struct S
{
int f : 1;
} a[100000000000000001][3];
void
foo (void)
{
struct S b = { 0 };
a[100000000000000000][0] = b;
}
void
bar (void)
{
a[100000000000000000][0].f = 1;
}