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ISO/IEC TR 18037 defines %r, %R, %k, and %K for fixed point format specifiers. -Wformat should not warn on these when they are provided.
149 lines
7.2 KiB
C
149 lines
7.2 KiB
C
// RUN: %clang_cc1 -ffixed-point -fsyntax-only -verify -Wformat -isystem %S/Inputs %s
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// RUN: %clang_cc1 -fsyntax-only -verify -Wformat -isystem %S/Inputs %s -DWITHOUT_FIXED_POINT
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int printf(const char *restrict, ...);
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short s;
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unsigned short us;
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int i;
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unsigned int ui;
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long l;
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unsigned long ul;
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float fl;
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double d;
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char c;
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unsigned char uc;
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#ifndef WITHOUT_FIXED_POINT
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short _Fract sf;
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_Fract f;
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long _Fract lf;
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unsigned short _Fract usf;
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unsigned _Fract uf;
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unsigned long _Fract ulf;
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short _Accum sa;
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_Accum a;
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long _Accum la;
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unsigned short _Accum usa;
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unsigned _Accum ua;
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unsigned long _Accum ula;
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_Sat short _Fract sat_sf;
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_Sat _Fract sat_f;
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_Sat long _Fract sat_lf;
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_Sat unsigned short _Fract sat_usf;
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_Sat unsigned _Fract sat_uf;
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_Sat unsigned long _Fract sat_ulf;
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_Sat short _Accum sat_sa;
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_Sat _Accum sat_a;
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_Sat long _Accum sat_la;
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_Sat unsigned short _Accum sat_usa;
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_Sat unsigned _Accum sat_ua;
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_Sat unsigned long _Accum sat_ula;
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void test_invalid_args(void) {
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/// None of these should match against a fixed point type.
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printf("%r", s); // expected-warning{{format specifies type '_Fract' but the argument has type 'short'}}
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printf("%r", us); // expected-warning{{format specifies type '_Fract' but the argument has type 'unsigned short'}}
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printf("%r", i); // expected-warning{{format specifies type '_Fract' but the argument has type 'int'}}
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printf("%r", ui); // expected-warning{{format specifies type '_Fract' but the argument has type 'unsigned int'}}
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printf("%r", l); // expected-warning{{format specifies type '_Fract' but the argument has type 'long'}}
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printf("%r", ul); // expected-warning{{format specifies type '_Fract' but the argument has type 'unsigned long'}}
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printf("%r", fl); // expected-warning{{format specifies type '_Fract' but the argument has type 'float'}}
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printf("%r", d); // expected-warning{{format specifies type '_Fract' but the argument has type 'double'}}
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printf("%r", c); // expected-warning{{format specifies type '_Fract' but the argument has type 'char'}}
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printf("%r", uc); // expected-warning{{format specifies type '_Fract' but the argument has type 'unsigned char'}}
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}
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void test_fixed_point_specifiers(void) {
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printf("%r", f);
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printf("%R", uf);
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printf("%k", a);
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printf("%K", ua);
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/// Test different sizes.
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printf("%r", sf); // expected-warning{{format specifies type '_Fract' but the argument has type 'short _Fract'}}
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printf("%r", lf); // expected-warning{{format specifies type '_Fract' but the argument has type 'long _Fract'}}
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printf("%R", usf); // expected-warning{{format specifies type 'unsigned _Fract' but the argument has type 'unsigned short _Fract'}}
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printf("%R", ulf); // expected-warning{{format specifies type 'unsigned _Fract' but the argument has type 'unsigned long _Fract'}}
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printf("%k", sa); // expected-warning{{format specifies type '_Accum' but the argument has type 'short _Accum'}}
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printf("%k", la); // expected-warning{{format specifies type '_Accum' but the argument has type 'long _Accum'}}
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printf("%K", usa); // expected-warning{{format specifies type 'unsigned _Accum' but the argument has type 'unsigned short _Accum'}}
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printf("%K", ula); // expected-warning{{format specifies type 'unsigned _Accum' but the argument has type 'unsigned long _Accum'}}
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/// Test signs.
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printf("%r", uf); // expected-warning{{format specifies type '_Fract' but the argument has type 'unsigned _Fract'}}
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printf("%R", f); // expected-warning{{format specifies type 'unsigned _Fract' but the argument has type '_Fract'}}
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printf("%k", ua); // expected-warning{{format specifies type '_Accum' but the argument has type 'unsigned _Accum'}}
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printf("%K", a); // expected-warning{{format specifies type 'unsigned _Accum' but the argument has type '_Accum'}}
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/// Test between types.
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printf("%r", a); // expected-warning{{format specifies type '_Fract' but the argument has type '_Accum'}}
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printf("%R", ua); // expected-warning{{format specifies type 'unsigned _Fract' but the argument has type 'unsigned _Accum'}}
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printf("%k", f); // expected-warning{{format specifies type '_Accum' but the argument has type '_Fract'}}
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printf("%K", uf); // expected-warning{{format specifies type 'unsigned _Accum' but the argument has type 'unsigned _Fract'}}
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/// Test saturated types.
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printf("%r", sat_f);
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printf("%R", sat_uf);
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printf("%k", sat_a);
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printf("%K", sat_ua);
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}
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void test_length_modifiers_and_flags(void) {
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printf("%hr", sf);
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printf("%lr", lf);
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printf("%hR", usf);
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printf("%lR", ulf);
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printf("%hk", sa);
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printf("%lk", la);
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printf("%hK", usa);
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printf("%lK", ula);
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printf("%hr", sat_sf);
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printf("%lr", sat_lf);
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printf("%hR", sat_usf);
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printf("%lR", sat_ulf);
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printf("%hk", sat_sa);
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printf("%lk", sat_la);
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printf("%hK", sat_usa);
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printf("%lK", sat_ula);
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printf("%10r", f);
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printf("%10.10r", f);
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printf("%010r", f);
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printf("%-10r", f);
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printf("%.10r", f);
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printf("%+r", f);
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printf("% r", f);
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printf("%#r", f);
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printf("%#.r", f);
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printf("%#.0r", f);
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/// Test some invalid length modifiers.
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printf("%zr", f); // expected-warning{{length modifier 'z' results in undefined behavior or no effect with 'r' conversion specifier}}
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printf("%llr", f); // expected-warning{{length modifier 'll' results in undefined behavior or no effect with 'r' conversion specifier}}
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printf("%hhr", f); // expected-warning{{length modifier 'hh' results in undefined behavior or no effect with 'r' conversion specifier}}
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// + on an unsigned fixed point type.
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printf("%+hR", usf); // expected-warning{{flag '+' results in undefined behavior with 'R' conversion specifier}}
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printf("%+R", uf); // expected-warning{{flag '+' results in undefined behavior with 'R' conversion specifier}}
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printf("%+lR", ulf); // expected-warning{{flag '+' results in undefined behavior with 'R' conversion specifier}}
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printf("%+hK", usa); // expected-warning{{flag '+' results in undefined behavior with 'K' conversion specifier}}
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printf("%+K", ua); // expected-warning{{flag '+' results in undefined behavior with 'K' conversion specifier}}
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printf("%+lK", ula); // expected-warning{{flag '+' results in undefined behavior with 'K' conversion specifier}}
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printf("% hR", usf); // expected-warning{{flag ' ' results in undefined behavior with 'R' conversion specifier}}
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printf("% R", uf); // expected-warning{{flag ' ' results in undefined behavior with 'R' conversion specifier}}
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printf("% lR", ulf); // expected-warning{{flag ' ' results in undefined behavior with 'R' conversion specifier}}
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printf("% hK", usa); // expected-warning{{flag ' ' results in undefined behavior with 'K' conversion specifier}}
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printf("% K", ua); // expected-warning{{flag ' ' results in undefined behavior with 'K' conversion specifier}}
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printf("% lK", ula); // expected-warning{{flag ' ' results in undefined behavior with 'K' conversion specifier}}
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}
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#else
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void test_fixed_point_specifiers_no_printf() {
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printf("%k", i); // expected-warning{{invalid conversion specifier 'k'}}
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printf("%K", i); // expected-warning{{invalid conversion specifier 'K'}}
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printf("%r", i); // expected-warning{{invalid conversion specifier 'r'}}
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printf("%R", i); // expected-warning{{invalid conversion specifier 'R'}}
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}
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#endif // WITHOUT_FIXED_POINT
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