http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52080
--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> 2012-06-04 08:43:31 UTC --- Author: rguenth Date: Mon Jun 4 08:43:23 2012 New Revision: 188167 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=188167 Log: 2012-06-04 Richard Guenther <rguent...@suse.de> Eric Botcazou <ebotca...@adacore.com> Backport from mainline 2012-04-03 Eric Botcazou <ebotca...@adacore.com> * expr.c (get_bit_range): Add OFFSET parameter and adjust BITPOS. Change type of BITOFFSET to signed. Make sure the lower bound of the computed range is non-negative by adjusting OFFSET and BITPOS. (expand_assignment): Adjust call to get_bit_range. 2012-03-27 Eric Botcazou <ebotca...@adacore.com> * expr.c (get_bit_range): Return the null range if the enclosing record is part of a larger bit field. 2012-03-20 Richard Guenther <rguent...@suse.de> * stor-layout.c (finish_bitfield_representative): Fallback to conservative maximum size if the padding up to the next field cannot be computed as a constant. (finish_bitfield_layout): If we cannot compute the distance between the start of the bitfield representative and the bitfield member start a new representative. * expr.c (get_bit_range): The distance between the start of the bitfield representative and the bitfield member is zero if the field offsets are not constants. 2012-03-16 Richard Guenther <rguent...@suse.de> * stor-layout.c (finish_bitfield_representative): Fall back to the conservative maximum size if we cannot compute the size of the tail padding. 2012-03-14 Richard Guenther <rguent...@suse.de> * tree.h (DECL_BIT_FIELD_REPRESENTATIVE): New define. * stor-layout.c (start_bitfield_representative): New function. (finish_bitfield_representative): Likewise. (finish_bitfield_layout): Likewise. (finish_record_layout): Call finish_bitfield_layout. * tree.c (free_lang_data_in_decl): Only free DECL_QUALIFIER for QUAL_UNION_TYPE fields. * tree-streamer-in.c (lto_input_ts_field_decl_tree_pointers): Stream DECL_BIT_FIELD_REPRESENTATIVE. * tree-streamer-out.c (write_ts_field_decl_tree_pointers): Likewise. PR middle-end/52080 PR middle-end/52097 PR middle-end/48124 * expr.c (get_bit_range): Unconditionally extract bitrange from DECL_BIT_FIELD_REPRESENTATIVE. (expand_assignment): Adjust call to get_bit_range. * gcc.dg/torture/pr48124-1.c: New testcase. * gcc.dg/torture/pr48124-2.c: Likewise. * gcc.dg/torture/pr48124-3.c: Likewise. * gcc.dg/torture/pr48124-4.c: Likewise. * gnat.dg/pack16.adb: Likewise. * gnat.dg/pack16_pkg.ads: Likewise. * gnat.dg/pack17.adb: Likewise. * gnat.dg/specs/pack7.ads: Likewise. * gnat.dg/specs/pack8.ads: Likewise. * gnat.dg/specs/pack8_pkg.ads: Likewise. Added: branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/torture/pr48124-1.c branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/torture/pr48124-2.c branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/torture/pr48124-3.c branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/torture/pr48124-4.c branches/gcc-4_7-branch/gcc/testsuite/gnat.dg/pack16.adb branches/gcc-4_7-branch/gcc/testsuite/gnat.dg/pack16_pkg.ads branches/gcc-4_7-branch/gcc/testsuite/gnat.dg/pack17.adb branches/gcc-4_7-branch/gcc/testsuite/gnat.dg/specs/pack7.ads branches/gcc-4_7-branch/gcc/testsuite/gnat.dg/specs/pack8.ads branches/gcc-4_7-branch/gcc/testsuite/gnat.dg/specs/pack8_pkg.ads Modified: branches/gcc-4_7-branch/gcc/ChangeLog branches/gcc-4_7-branch/gcc/expr.c branches/gcc-4_7-branch/gcc/stor-layout.c branches/gcc-4_7-branch/gcc/testsuite/ChangeLog branches/gcc-4_7-branch/gcc/tree-streamer-in.c branches/gcc-4_7-branch/gcc/tree-streamer-out.c branches/gcc-4_7-branch/gcc/tree.c branches/gcc-4_7-branch/gcc/tree.h
