File: constant-conversion.cpp

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8~deb9u3
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
file content (24 lines) | stat: -rw-r--r-- 946 bytes parent folder | download | duplicates (15)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
// RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-apple-darwin %s

// This file tests -Wconstant-conversion, a subcategory of -Wconversion
// which is on by default.

constexpr int nines() { return 99999; }

void too_big_for_char(int param) {
  char warn1 = false ? 0 : 99999;
  // expected-warning@-1 {{implicit conversion from 'int' to 'char' changes value from 99999 to -97}}
  char warn2 = false ? 0 : nines();
  // expected-warning@-1 {{implicit conversion from 'int' to 'char' changes value from 99999 to -97}}

  char warn3 = param > 0 ? 0 : 99999;
  // expected-warning@-1 {{implicit conversion from 'int' to 'char' changes value from 99999 to -97}}
  char warn4 = param > 0 ? 0 : nines();
  // expected-warning@-1 {{implicit conversion from 'int' to 'char' changes value from 99999 to -97}}

  char ok1 = true ? 0 : 99999;
  char ok2 = true ? 0 : nines();

  char ok3 = true ? 0 : 99999 + 1;
  char ok4 = true ? 0 : nines() + 1;
}