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| author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
|---|---|---|
| committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
| commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
| tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.target/i386/pr25654.c | |
| parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
| download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip | |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target/i386/pr25654.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/i386/pr25654.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/i386/pr25654.c b/gcc-4.9/gcc/testsuite/gcc.target/i386/pr25654.c new file mode 100644 index 000000000..d53a29794 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.target/i386/pr25654.c @@ -0,0 +1,42 @@ +/* { dg-do run } */ +/* { dg-require-effective-target ia32 } */ +/* { 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; +} + |