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re PR c++/42217 (ICE with zero-length bit-field) 

Fix PR c++/42217

gcc/cp/ChangeLog
	PR c++/42217
	* class.c (remove_zero_width_bit_fields): The width of the bit field is
	in DECL_SIZE, not in DECL_INITIAL.

gcc/testsuite/ChangeLog
	PR c++/42217
	* g++.dg/other/bitfield4.C: New test.

From-SVN: r154938
This commit is contained in:
Dodji Seketeli 2009-12-03 08:33:03 +00:00 committed by Dodji Seketeli
parent 249ccaff22
commit 84894f850f
4 changed files with 27 additions and 1 deletions
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6
gcc/cp/ChangeLog
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@ -1,3 +1,9 @@
2009-12-03 Dodji Seketeli <dodji@redhat.com>
PR c++/42217
* class.c (remove_zero_width_bit_fields): The width of the bit field is
in DECL_SIZE, not in DECL_INITIAL.
2009-12-03 Jakub Jelinek <jakub@redhat.com>
PR c++/42256

7
gcc/cp/class.c
View File

@ -4254,7 +4254,12 @@ remove_zero_width_bit_fields (tree t)
{
if (TREE_CODE (*fieldsp) == FIELD_DECL
&& DECL_C_BIT_FIELD (*fieldsp)
&& DECL_INITIAL (*fieldsp))
/* We should not be confused by the fact that grokbitfield
temporarily sets the width of the bit field into
DECL_INITIAL (*fieldsp).
check_bitfield_decl eventually sets DECL_SIZE (*fieldsp)
to that width. */
&& integer_zerop (DECL_SIZE (*fieldsp)))
*fieldsp = TREE_CHAIN (*fieldsp);
else
fieldsp = &TREE_CHAIN (*fieldsp);

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2009-12-03 Dodji Seketeli <dodji@redhat.com>
PR c++/42217
* g++.dg/other/bitfield4.C: New test.
2009-12-03 Jakub Jelinek <jakub@redhat.com>
PR c++/42256

10
gcc/testsuite/g++.dg/other/bitfield4.C Normal file
View File

@ -0,0 +1,10 @@
// Contributed by Dodji Seketeli <dodji@redhat.com>
// Origin PR c++/42217
// { dg-do compile }
struct A
{
int : 0;
};
A a = A();