llvm-project/clang/test/Sema/format-strings-non-iso.c

30 lines
1.9 KiB
C

// RUN: %clang_cc1 -triple i686-linux-gnu -fsyntax-only -verify -std=c99 -Wformat-non-iso %s
int printf(const char *restrict, ...);
int scanf(const char * restrict, ...);
void f(void) {
char *cp;
// The 'q' length modifier.
printf("%qd", (long long)42); // expected-warning{{'q' length modifier is not supported by ISO C}} expected-note{{did you mean to use 'll'?}}
scanf("%qd", (long long *)0); // expected-warning{{'q' length modifier is not supported by ISO C}} expected-note{{did you mean to use 'll'?}}
// The 'm' length modifier.
scanf("%ms", &cp); // expected-warning{{'m' length modifier is not supported by ISO C}}
// The 'S' and 'C' conversion specifiers.
printf("%S", L"foo"); // expected-warning{{'S' conversion specifier is not supported by ISO C}}
printf("%C", L'x'); // expected-warning{{'C' conversion specifier is not supported by ISO C}}
// Combining 'L' with an integer conversion specifier.
printf("%Li", (long long)42); // expected-warning{{using length modifier 'L' with conversion specifier 'i' is not supported by ISO C}} expected-note{{did you mean to use 'll'?}}
printf("%Lo", (long long)42); // expected-warning{{using length modifier 'L' with conversion specifier 'o' is not supported by ISO C}} expected-note{{did you mean to use 'll'?}}
printf("%Lu", (long long)42); // expected-warning{{using length modifier 'L' with conversion specifier 'u' is not supported by ISO C}} expected-note{{did you mean to use 'll'?}}
printf("%Lx", (long long)42); // expected-warning{{using length modifier 'L' with conversion specifier 'x' is not supported by ISO C}} expected-note{{did you mean to use 'll'?}}
printf("%LX", (long long)42); // expected-warning{{using length modifier 'L' with conversion specifier 'X' is not supported by ISO C}} expected-note{{did you mean to use 'll'?}}
// Positional arguments.
printf("%1$d", 42); // expected-warning{{positional arguments are not supported by ISO C}}
}