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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.dg/pr55430.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.dg/pr55430.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/pr55430.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/pr55430.c b/gcc-4.9/gcc/testsuite/gcc.dg/pr55430.c new file mode 100644 index 000000000..ac56cacea --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/pr55430.c @@ -0,0 +1,46 @@ +/* PR middle-end/55430 */ +/* { dg-do run { target mmap } } */ +/* { dg-options "-O2" } */ + +#include <stddef.h> +#include <stdio.h> +#include <sys/mman.h> +#ifndef MAP_ANONYMOUS +#define MAP_ANONYMOUS MAP_ANON +#endif +#ifndef MAP_ANON +#define MAP_ANON 0 +#endif +#ifndef MAP_FAILED +#define MAP_FAILED ((void *)-1) +#endif +#include <stdlib.h> + +struct S +{ + unsigned int s1 : 8; + unsigned int s2 : 2; +}; + +__attribute__((noinline, noclone)) int +foo (int x, int y, struct S *z, unsigned int w) +{ + if (z[y].s2 == x && z[y].s1 == w) + return 1; + return 0; +} + +int +main () +{ + char *p = mmap (NULL, 131072, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + if (p == MAP_FAILED) + return 0; + if (munmap (p + 65536, 65536) < 0) + return 0; + if ((65536 / sizeof (struct S)) * sizeof (struct S) != 65536) + return 0; + struct S *s = (struct S *) (p + 65536); + return foo (0, 0, s - 1, 0) != 1; +} |