diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/wself-assign-1.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/wself-assign-1.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/wself-assign-1.c b/gcc-4.9/gcc/testsuite/gcc.dg/wself-assign-1.c new file mode 100644 index 000000000..19324a645 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/wself-assign-1.c @@ -0,0 +1,27 @@ +/* Test the self-assignemnt detection and warning. */ +/* { dg-do compile } */ +/* { dg-options "-Wself-assign" } */ + +struct Bar { + int b_; + int c_; +}; + +int g; + +int main() +{ + struct Bar *bar; + int x = x; /* { dg-warning "assigned to itself" } */ + static int y; + struct Bar b_array[5]; + + b_array[x+g].b_ = b_array[x+g].b_; /* { dg-warning "assigned to itself" } */ + g = g; /* { dg-warning "assigned to itself" } */ + y = y; /* { dg-warning "assigned to itself" } */ + bar->b_ = bar->b_; /* { dg-warning "assigned to itself" } */ + x += 0; /* should not warn */ + y -= 0; /* should not warn */ + x /= x; /* should not warn */ + y *= y; /* should not warn */ +} |