| // RUN: %clang_cc1 -fsyntax-only -Wliteral-conversion -verify %s |
| |
| void foo(int y); |
| |
| // Warn when a literal float or double is assigned or bound to an integer. |
| void test0() { |
| // Float |
| int y0 = 1.2222F; // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| int y1 = (1.2222F); // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| int y2 = (((1.2222F))); // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| int y3 = 12E1F; // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| int y4 = 1.2E1F; // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| // Double |
| int y5 = 1.2222; // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| int y6 = 12E1; // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| int y7 = 1.2E1; // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| int y8 = (1.2E1); // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| |
| // Test assignment to an existing variable. |
| y8 = 2.22F; // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| |
| // Test direct initialization. |
| int y9(1.23F); // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| |
| // Test passing a literal floating-point value to a function that takes an integer. |
| foo(1.2F); // expected-warning {{implicit conversion turns literal floating-point number into integer}} |
| |
| // FIXME: -Wconversion-literal doesn't catch "-1.2F". |
| int y10 = -1.2F; |
| |
| // -Wconversion-literal does NOT catch const values. |
| // (-Wconversion DOES catch them.) |
| static const float sales_tax_rate = .095F; |
| int z = sales_tax_rate; |
| foo(sales_tax_rate); |
| |
| // Expressions, such as those that indicate rounding-down, should NOT produce warnings. |
| int x = 24 * 0.5; |
| int y = (24*60*60) * 0.25; |
| int pennies = 123.45 * 100; |
| } |