gcc/testsuite/gcc.dg/pr53037-1.c

   1 /* PR c/53037.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O0" } */
   4 /* { dg-skip-if "" { avr-*-* } } */
   5
   6 typedef unsigned long long __u64
   7   __attribute__((aligned(4),warn_if_not_aligned(8)));
   8
   9 struct foo1
  10 {
  11   int i1;
  12   int i2;
  13   int i3;
  14   __u64 x; /* { dg-warning "'x' offset 12 in 'struct foo1' isn't aligned to 8" } */
  15 }; /* { dg-warning "alignment 4 of 'struct foo1' is less than 8" } */
  16
  17 struct foo2
  18 {
  19   int i1;
  20   int i2;
  21   int i3;
  22   __u64 x; /* { dg-warning "'x' offset 12 in 'struct foo2' isn't aligned to 8" } */
  23 } __attribute__((aligned(8)));
  24
  25 struct foo3
  26 {
  27   int i1;
  28   int i3;
  29   __u64 x;
  30 }; /* { dg-warning "alignment 4 of 'struct foo3' is less than 8" } */
  31
  32 struct foo4
  33 {
  34   int i1;
  35   int i2;
  36   __u64 x;
  37 } __attribute__((aligned(8)));
  38
  39 struct foo5
  40 {
  41   int i1;
  42   int x __attribute__((warn_if_not_aligned(16))); /* { dg-warning "'x' offset 4 in 'struct foo5' isn't aligned to 16" } */
  43 }; /* { dg-warning "alignment 4 of 'struct foo5' is less than 16" } */
  44
  45 struct foo6
  46 {
  47   int i1;
  48   int x __attribute__((warn_if_not_aligned(16))); /* { dg-warning "'x' offset 4 in 'struct foo6' isn't aligned to 16" } */
  49 } __attribute__((aligned(16)));
  50
  51 struct foo7
  52 {
  53   int i1;
  54   int i2;
  55   int i3;
  56   int i4;
  57   int x __attribute__((warn_if_not_aligned(16)));
  58 } __attribute__((aligned(16)));
  59
  60 union bar1
  61 {
  62   int i1;
  63   __u64 x;
  64 }; /* { dg-warning "alignment 4 of 'union bar1' is less than 8" } */
  65
  66 union bar2
  67 {
  68   int i1;
  69   __u64 x;
  70 } __attribute__((aligned(8)));
  71
  72 union bar3
  73 {
  74   int i1;
  75   int x __attribute__((warn_if_not_aligned(16)));
  76 }; /* { dg-warning "alignment 4 of 'union bar3' is less than 16" } */
  77
  78 union bar4
  79 {
  80   int i1;
  81   int x __attribute__((warn_if_not_aligned(16)));
  82 } __attribute__((aligned(16)));