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1// RUN: %clang_cc1 -std=c2x -verify %s2 3_Static_assert(1'2'3 == 12'3, "");4_Static_assert(1'000'000 == 0xf'4240, "");5_Static_assert(0'004'000'000 == 0x10'0000, "");6_Static_assert(0b0101'0100 == 0x54, "");7 8int a0 = 123'; //'; // expected-error {{expected ';'}}9int b0 = 0'xff; // expected-error {{digit separator cannot appear at end of digit sequence}} expected-error {{suffix 'xff' on integer}}10int c0 = 0x'ff; // expected-error {{suffix 'x'ff' on integer}}11int d0 = 0'1234; // ok, octal12int e0 = 0'b1010; // expected-error {{digit 'b' in octal constant}}13int f0 = 0b'1010; // expected-error {{invalid digit 'b' in octal}}14int h0 = 0x1e+1; // expected-error {{invalid suffix '+1' on integer constant}}15int i0 = 0x1'e+1; // ok, 'e+' is not recognized after a digit separator16 17float a1 = 1'e1; // expected-error {{digit separator cannot appear at end of digit sequence}}18float b1 = 1'0e1;19float c1 = 1.'0e1; // expected-error {{digit separator cannot appear at start of digit sequence}}20float d1 = 1.0'e1; // expected-error {{digit separator cannot appear at end of digit sequence}}21float e1 = 1e'1; // expected-error {{digit separator cannot appear at start of digit sequence}}22float g1 = 0.'0; // expected-error {{digit separator cannot appear at start of digit sequence}}23float h1 = .'0; // '; // expected-error {{expected expression}}, lexed as . followed by character literal24float i1 = 0x.'0p0; // expected-error {{digit separator cannot appear at start of digit sequence}}25float j1 = 0x'0.0p0; // expected-error {{invalid suffix 'x'0.0p0'}}26float k1 = 0x0'.0p0; // '; // expected-error {{expected ';'}}27float l1 = 0x0.'0p0; // expected-error {{digit separator cannot appear at start of digit sequence}}28float m1 = 0x0.0'p0; // expected-error {{digit separator cannot appear at end of digit sequence}}29float n1 = 0x0.0p'0; // expected-error {{digit separator cannot appear at start of digit sequence}}30float p1 = 0'e1; // expected-error {{digit separator cannot appear at end of digit sequence}}31float q1 = 0'0e1;32float r1 = 0.'0e1; // expected-error {{digit separator cannot appear at start of digit sequence}}33float s1 = 0.0'e1; // expected-error {{digit separator cannot appear at end of digit sequence}}34float t1 = 0.0e'1; // expected-error {{digit separator cannot appear at start of digit sequence}}35float u1 = 0x.'p1f; // expected-error {{hexadecimal floating constant requires a significand}}36float v1 = 0e'f; // expected-error {{exponent has no digits}}37float w1 = 0x0p'f; // expected-error {{exponent has no digits}}38float x1 = 0'e+1; // expected-error {{digit separator cannot appear at end of digit sequence}}39float y1 = 0x0'p+1; // expected-error {{digit separator cannot appear at end of digit sequence}}40 41#line 123'45642_Static_assert(__LINE__ == 123456, "");43 44// UCNs can appear before digit separators but not after.45int a2 = 0\u1234'5; // expected-error {{invalid suffix '\u1234'5' on integer constant}}46int b2 = 0'\u12345; // '; // expected-error {{expected ';'}}47 48// extended characters can appear before digit separators but not after.49int a3 = 0ሴ'5; // expected-error {{invalid suffix 'ሴ'5' on integer constant}}50int b3 = 0'ሴ5; // '; // expected-error {{expected ';'}}51 52