From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.dg/duff-2.c | 60 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/duff-2.c (limited to 'gcc/testsuite/gcc.dg/duff-2.c') diff --git a/gcc/testsuite/gcc.dg/duff-2.c b/gcc/testsuite/gcc.dg/duff-2.c new file mode 100644 index 000000000..8b8923eb9 --- /dev/null +++ b/gcc/testsuite/gcc.dg/duff-2.c @@ -0,0 +1,60 @@ +/* Duff's device is legal C; test to make sure the compiler + doesn't complain about it. + + Jason Thorpe + Derived from the BSD Telnet Kerberos 4 checksum routine. + See also PR 5230. */ + +/* { dg-do run } */ +/* { dg-options "-O2" } */ + +extern void abort (void); +extern void exit (int); + +#if __INT_MAX__ >= 2147483647 +/* At least 32-bit integers. */ +typedef int type32; +#else +typedef long type32; +#endif + +type32 +cksum (const unsigned char *src, unsigned long size) +{ + type32 ck = 0; + + switch (size & 3) + { + while (size > 0) + { + case 0: + ck ^= (type32)*src++ << 24; + --size; + case 3: + ck ^= (type32)*src++ << 16; + --size; + case 2: + ck ^= (type32)*src++ << 8; + --size; + case 1: + ck ^= (type32)*src++; + --size; + } + } + + return ck; +} + +const char testpat[] = "The quick brown fox jumped over the lazy dog."; + +int +main() +{ + type32 ck; + + ck = cksum ((const unsigned char *) testpat, sizeof (testpat)); + if (ck != 925902908) + abort (); + + exit (0); +} -- cgit v1.2.3