diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/i386/pr25654.c')
-rw-r--r-- | gcc/testsuite/gcc.target/i386/pr25654.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/pr25654.c b/gcc/testsuite/gcc.target/i386/pr25654.c new file mode 100644 index 000000000..2d7ef221f --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr25654.c @@ -0,0 +1,42 @@ +/* { dg-do run } */ +/* { dg-require-effective-target ilp32 } */ +/* { dg-options "-O2 -mpreferred-stack-boundary=2 -march=i686 -frename-registers" } */ + +extern void abort (void) __attribute__((noreturn)); + +struct wrapper { +union setconflict +{ + short a[20]; + int b[10]; +} a; +}; + +int +main () +{ + int sum = 0; + { + struct wrapper a; + short *c; + c = a.a.a; + asm ("": "=r" (c):"0" (c)); + *c = 0; + asm ("": "=r" (c):"0" (c)); + sum += *c; + } + { + struct wrapper a; + int *c; + c = a.a.b; + asm ("": "=r" (c):"0" (c)); + *c = 1; + asm ("": "=r" (c):"0" (c)); + sum += *c; + } + + if (sum != 1) + abort(); + return 0; +} + |