1 /* $NetBSD: lex_integer_binary.c,v 1.3 2023/03/28 14:44:34 rillig Exp $ */ 2 # 3 "lex_integer_binary.c" 3 4 /* 5 * Test for parsing binary integer literals in non-GCC mode. 6 * As of C11, binary integer literals are not supported. 7 * Neither are underscores in integer literals. 8 */ 9 10 /* Remove the default -g flag. */ 11 /* lint1-flags: -Ac11 -w -X 351 */ 12 13 void sink(unsigned int); 14 15 void 16 binary_literal(void) 17 { 18 /* 19 * Binary integer literals are a GCC extension, but lint allows them 20 * even in non-GCC mode. 21 */ 22 sink(0b1111000001011010); 23 24 /* 25 * Even though it would be useful for binary literals, GCC does not 26 * support underscores to separate the digit groups. 27 */ 28 /* expect+1: error: syntax error '_0000_0101_1010' [249] */ 29 sink(0b1111_0000_0101_1010); 30 } 31