52 lines · c
1/* RUN: rm -rf %t && mkdir %t2 RUN: cp %s %t/dr324.c3 4 Note: this file (dr324.c) must be newer than the file used for the5 dependency pragma (dep.c), otherwise we get an unrelated "current file is6 older than dependency" warning. Touch dep.c first to make sure it's7 always older.8 RUN: touch %t/dep.c9 RUN: touch %t/dr324.c10 11 RUN: %clang_cc1 -std=c89 -fsyntax-only -fms-extensions -pedantic -verify %t/dr324.c12 RUN: %clang_cc1 -std=c99 -fsyntax-only -fms-extensions -pedantic -verify %t/dr324.c13 RUN: %clang_cc1 -std=c11 -fsyntax-only -fms-extensions -pedantic -verify %t/dr324.c14 RUN: %clang_cc1 -std=c17 -fsyntax-only -fms-extensions -pedantic -verify %t/dr324.c15 RUN: %clang_cc1 -std=c2x -fsyntax-only -fms-extensions -pedantic -verify %t/dr324.c16 */17 18/* WG14 DR324: yes19 * Tokenization obscurities20 */21 22/* We need to diagnose an unknown escape sequence in a string or character23 * literal, but not within a header-name terminal.24 */25const char *lit_str = "\y"; /* expected-warning {{unknown escape sequence '\y'}} */26char lit_char = '\y'; /* expected-warning {{unknown escape sequence '\y'}} */27 28/* This gets trickier in a pragma where there are implementation-defined29 * locations that may use a header-name production. The first pragma below30 * is using \d but it's in a header-name use rather than a string-literal use.31 * The second pragma is a string-literal and so the \d is invalid there.32 */33#ifdef _WIN3234/* This test only makes sense on Windows targets, where the backslash is a valid35 * path separator.36 */37#pragma GCC dependency "oops\..\dep.c"38#endif39#pragma message("this has a \t tab escape and an invalid \d escape") /* expected-warning {{this has a tab escape and an invalid d escape}}40 expected-warning {{unknown escape sequence '\d'}}41 */42 43/*44 * Note, this tests the behavior of a non-empty source file that ends with a45 * partial preprocessing token such as an unterminated string or character46 * literal. Thus, it is important that no code be added after this test case.47 */48/* expected-error@+3 {{expected identifier or '('}}49 expected-warning@+3 {{missing terminating ' character}}50 */51't52