diff options
| author | Mark Mitchell <mark@codesourcery.com> | 2002-12-23 02:10:18 +0000 |
|---|---|---|
| committer | Mark Mitchell <mmitchel@gcc.gnu.org> | 2002-12-23 02:10:18 +0000 |
| commit | d0ff2db506782900cfb16584514e194e7dca50e2 (patch) | |
| tree | c690c9aebf9f42277b73fbc81bb18b0315490a4b | |
| parent | bea096ccbf8853ff588f85cdbfc42597e60256d6 (diff) | |
| download | gcc-d0ff2db506782900cfb16584514e194e7dca50e2.zip gcc-d0ff2db506782900cfb16584514e194e7dca50e2.tar.gz gcc-d0ff2db506782900cfb16584514e194e7dca50e2.tar.bz2 | |
stor-layout.c (update_alignment_for_field): Use ADJUST_FIELD_ALIGN when computing the alignment for a zero-width bitfield...
* stor-layout.c (update_alignment_for_field): Use
ADJUST_FIELD_ALIGN when computing the alignment for a zero-width
bitfield when PCC_BITFIELD_TYPE_MATTERS.
From-SVN: r60419
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/stor-layout.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/i386-bitfield2.c | 22 |
3 files changed, 32 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 505257a..dca029b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2002-12-22 Mark Mitchell <mark@codesourcery.com> + + * stor-layout.c (update_alignment_for_field): Use + ADJUST_FIELD_ALIGN when computing the alignment for a zero-width + bitfield when PCC_BITFIELD_TYPE_MATTERS. + 2002-12-22 Kazu Hirata <kazu@cs.umass.edu> * genautomata.c: Fix comment typos. diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c index 0dd8fc6..21791fc 100644 --- a/gcc/stor-layout.c +++ b/gcc/stor-layout.c @@ -722,7 +722,10 @@ update_alignment_for_field (rli, field, known_align) if (! integer_zerop (DECL_SIZE (field))) rli->record_align = MAX (rli->record_align, desired_align); else if (! DECL_PACKED (field)) - desired_align = TYPE_ALIGN (type); + { + desired_align = TYPE_ALIGN (type); + desired_align = ADJUST_FIELD_ALIGN (field, desired_align); + } /* A named bit field of declared type `int' forces the entire structure to have `int' alignment. */ diff --git a/gcc/testsuite/gcc.dg/i386-bitfield2.c b/gcc/testsuite/gcc.dg/i386-bitfield2.c new file mode 100644 index 0000000..2ea7982 --- /dev/null +++ b/gcc/testsuite/gcc.dg/i386-bitfield2.c @@ -0,0 +1,22 @@ +// Test for bitfield alignment in structs on IA-32 +// { dg-do run { target i?86-*-* } } +// { dg-options "-O2" } +// { dg-options "-mno-align-double -mno-ms-bitfields" { target *-*-interix* } } + +extern void abort (void); +extern void exit (int); + +struct X { + char a; + long long : 0; + char b; +} x; + +int main () { + if (&x.b - &x.a != 4) + abort (); + if (sizeof (x) != 5) + abort (); + + exit (0); +} |