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

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