diff options
Diffstat (limited to 'gcc/testsuite/g++.dg/opt/ptrintsum1.C')
-rw-r--r-- | gcc/testsuite/g++.dg/opt/ptrintsum1.C | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/opt/ptrintsum1.C b/gcc/testsuite/g++.dg/opt/ptrintsum1.C new file mode 100644 index 000000000..a6a3c9727 --- /dev/null +++ b/gcc/testsuite/g++.dg/opt/ptrintsum1.C @@ -0,0 +1,29 @@ +// PR c++/4401 +// This testcase was miscompiled on 64-bit platforms, resulting to +// operating on a[0x100000000] instead of a[0]. +// { dg-do run } +// { dg-options "-O2" } + +char *a; +char b[] = "AAAA"; + +extern "C" void abort (void); +extern "C" void exit (int); + +void foo (void) +{ + unsigned int i, j; + + i = 2; + j = 3; + a[i + 1 - j] += i; +} + +int main (void) +{ + a = b; + foo (); + if (b[0] != 'A' + 2) + abort (); + exit (0); +} |