diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/Wparentheses-2.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/Wparentheses-2.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/Wparentheses-2.c b/gcc/testsuite/gcc.dg/Wparentheses-2.c new file mode 100644 index 000000000..51038c2d7 --- /dev/null +++ b/gcc/testsuite/gcc.dg/Wparentheses-2.c @@ -0,0 +1,121 @@ +/* Test operation of -Wparentheses. Warnings for X<=Y<=Z should be + there rather than hidden in -Wextra. */ +/* Origin: Joseph Myers <jsm@polyomino.org.uk> */ + +/* { dg-do compile } */ +/* { dg-options "-Wparentheses" } */ + +int foo (int); + +int +bar (int a, int b, int c) +{ + foo (a <= b <= c); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((a <= b) <= c); + foo (a <= (b <= c)); + foo (1 <= 2 <= c); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((1 <= 2) <= c); + foo (1 <= (2 <= c)); + foo (1 <= 2 <= 3); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((1 <= 2) <= 3); + foo (1 <= (2 <= 3)); + foo (a > b > c); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((a > b) > c); + foo (a > (b > c)); + foo (1 > 2 > c); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((1 > 2) > c); + foo (1 > (2 > c)); + foo (1 > 2 > 3); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((1 > 2) > 3); + foo (1 > (2 > 3)); + foo (a < b <= c); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((a < b) <= c); + foo (a < (b <= c)); + foo (1 < 2 <= c); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((1 < 2) <= c); + foo (1 < (2 <= c)); + foo (1 < 2 <= 3); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((1 < 2) <= 3); + foo (1 < (2 <= 3)); + foo (a <= b > c); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((a <= b) > c); + foo (a <= (b > c)); + foo (1 <= 2 > c); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((1 <= 2) > c); + foo (1 <= (2 > c)); + foo (1 <= 2 > 3); /* { dg-warning "mathematical meaning" "correct warning" } */ + foo ((1 <= 2) > 3); + foo (1 <= (2 > 3)); + foo (a <= b == c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a <= b) == c); + foo (a <= (b == c)); + foo (1 <= 2 == c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 <= 2) == c); + foo (1 <= (2 == c)); + foo (1 <= 2 == 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 <= 2) == 3); + foo (1 <= (2 == 3)); + foo (a != b != c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a != b) != c); + foo (a != (b != c)); + foo (1 != 2 != c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 != 2) != c); + foo (1 != (2 != c)); + foo (1 != 2 != 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 != 2) != 3); + foo (1 != (2 != 3)); + foo (a < b == c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a < b) == c); + foo (a < (b == c)); + foo (a > b == c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a > b) == c); + foo (a > (b == c)); + foo (a == b < c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a == b) < c); + foo (a == (b < c)); + foo (a == b > c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a == b) > c); + foo (a == (b > c)); + foo (a == b == c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a == b) == c); + foo (a == (b == c)); + foo (1 == 2 == 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 == 2) == 3); + foo (1 == (2 == 3)); + foo (1 < 2 == 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 < 2) == 3); + foo (1 < (2 == 3)); + foo (1 > 2 == 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 > 2) == 3); + foo (1 > (2 == 3)); + foo (1 == 2 < 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 == 2) < 3); + foo (1 == (2 < 3)); + foo (1 == 2 > 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 == 2) > 3); + foo (1 == (2 > 3)); + foo (a < b != c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a < b) != c); + foo (a < (b != c)); + foo (a > b != c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a > b) != c); + foo (a > (b != c)); + foo (a != b < c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a != b) < c); + foo (a != (b < c)); + foo (a != b > c); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((a != b) > c); + foo (a != (b > c)); + foo (1 < 2 != 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 < 2) != 3); + foo (1 < (2 != 3)); + foo (1 > 2 != 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 > 2) != 3); + foo (1 > (2 != 3)); + foo (1 != 2 < 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 != 2) < 3); + foo (1 != (2 < 3)); + foo (1 != 2 > 3); /* { dg-warning "suggest parentheses around comparison" "correct warning" } */ + foo ((1 != 2) > 3); + foo (1 != (2 > 3)); +} |