1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/patches/gcc/3.3.3/pr10392-1-test.patch Sat Jul 14 13:06:56 2007 +0000
1.3 @@ -0,0 +1,65 @@
1.4 +--- /dev/null Sat Dec 14 13:56:51 2002
1.5 ++++ gcc-3.3.1/gcc/testsuite/gcc.dg/pr10392-1.c Sun Sep 14 14:28:24 2003
1.6 +@@ -0,0 +1,62 @@
1.7 ++/* PR optimization/10392
1.8 ++ * Reporter: marcus@mc.pp.se
1.9 ++ * Summary: [3.3/3.4 regression] [SH] optimizer generates faulty array indexing
1.10 ++ * Description:
1.11 ++ * The address calculation of an index operation on an array on the stack
1.12 ++ * can _under some conditions_ get messed up completely
1.13 ++ *
1.14 ++ * Testcase tweaked by dank@kegel.com
1.15 ++ * Problem only happens with -O2 -m4, so it should only happen on sh4,
1.16 ++ * but what the heck, let's test other architectures, too.
1.17 ++ * Not marked as xfail since it's a regression.
1.18 ++*/
1.19 ++/* { dg-do run } */
1.20 ++/* { dg-options "-O2" } */
1.21 ++/* { dg-options "-O2 -m4" { target sh4-*-* } } */
1.22 ++const char *dont_optimize_function_away;
1.23 ++
1.24 ++const char *use(const char *str)
1.25 ++{
1.26 ++ dont_optimize_function_away = str;
1.27 ++ if (str[0] != 'v')
1.28 ++ abort();
1.29 ++ if (str[1] < '1' || str[1] > '6')
1.30 ++ abort();
1.31 ++ if (str[2])
1.32 ++ abort();
1.33 ++ return str[2] ? "notused" : "v6";
1.34 ++}
1.35 ++
1.36 ++const char *func(char *a, char *b)
1.37 ++{
1.38 ++ char buf[128];
1.39 ++ unsigned char i;
1.40 ++ const char *result;
1.41 ++
1.42 ++ char *item[] = {
1.43 ++ "v1",
1.44 ++ "v2",
1.45 ++ };
1.46 ++
1.47 ++ buf[0] = 'v';
1.48 ++ buf[1] = '3';
1.49 ++ buf[2] = 0;
1.50 ++
1.51 ++ for (i = 0; i < 2; i++) {
1.52 ++ /* bug is: following line passes wild pointer to use() on sh4 -O2 */
1.53 ++ result = use(item[i]);
1.54 ++
1.55 ++ use(buf);
1.56 ++ use(a);
1.57 ++ use(b);
1.58 ++ result = use(result);
1.59 ++ }
1.60 ++ return result;
1.61 ++}
1.62 ++
1.63 ++int main()
1.64 ++{
1.65 ++ func("v4", "v5");
1.66 ++ return 0;
1.67 ++}
1.68 ++