derek.holloway
7502bf64a4
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69 lines
3.0 KiB
C++
69 lines
3.0 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -Wformat-nonliteral -Wformat-non-iso -fblocks -std=c++11 %s
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__attribute__((format(scanf, 1, 2)))
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int scanf(const char *, ...);
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template<typename... Args>
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__attribute__((format(scanf, 1, 2)))
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int scan(const char *fmt, Args &&...args) { // expected-warning{{GCC requires a function with the 'format' attribute to be variadic}}
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return scanf(fmt, args...);
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}
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union bag {
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bool b;
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unsigned char uc;
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signed char sc;
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unsigned short us;
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signed short ss;
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unsigned int ui;
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signed int si;
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unsigned long ul;
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signed long sl;
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unsigned long long ull;
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signed long long sll;
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__fp16 f16;
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float ff;
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double fd;
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long double fl;
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};
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void test(void) {
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bag b;
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// expected-warning@+2 {{format specifies type 'char *' but the argument has type 'bool *'}}
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// expected-warning@+1 {{format specifies type 'unsigned char *' but the argument has type 'bool *'}}
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scan("%hhi %hhu %hhi %hhu", &b.sc, &b.uc, &b.b, &b.b);
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scan("%hi %hu", &b.ss, &b.us);
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scan("%i %u", &b.si, &b.ui);
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scan("%li %lu", &b.sl, &b.ul);
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scan("%lli %llu", &b.sll, &b.ull);
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scan("%f", &b.ff);
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scan("%lf", &b.fd);
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scan("%Lf", &b.fl);
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// expected-warning@+4{{format specifies type 'short *' but the argument has type 'signed char *'}}
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// expected-warning@+3{{format specifies type 'unsigned short *' but the argument has type 'unsigned char *'}}
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// expected-warning@+2{{format specifies type 'short *' but the argument has type 'bool *'}}
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// expected-warning@+1{{format specifies type 'unsigned short *' but the argument has type 'bool *'}}
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scan("%hi %hu %hi %hu", &b.sc, &b.uc, &b.b, &b.b);
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// expected-warning@+3{{format specifies type 'long *' but the argument has type 'short *'}}
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// expected-warning@+2{{format specifies type 'char *' but the argument has type 'short *'}}
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// expected-warning@+1{{format specifies type 'int *' but the argument has type 'short *'}}
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scan("%hhi %i %li", &b.ss, &b.ss, &b.ss);
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// expected-warning@+3{{format specifies type 'float *' but the argument has type '__fp16 *'}}
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// expected-warning@+2{{format specifies type 'float *' but the argument has type 'double *'}}
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// expected-warning@+1{{format specifies type 'float *' but the argument has type 'long double *'}}
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scan("%f %f %f", &b.f16, &b.fd, &b.fl);
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// expected-warning@+3{{format specifies type 'double *' but the argument has type '__fp16 *'}}
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// expected-warning@+2{{format specifies type 'double *' but the argument has type 'float *'}}
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// expected-warning@+1{{format specifies type 'double *' but the argument has type 'long double *'}}
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scan("%lf %lf %lf", &b.f16, &b.ff, &b.fl);
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// expected-warning@+3{{format specifies type 'long double *' but the argument has type '__fp16 *'}}
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// expected-warning@+2{{format specifies type 'long double *' but the argument has type 'float *'}}
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// expected-warning@+1{{format specifies type 'long double *' but the argument has type 'double *'}}
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scan("%Lf %Lf %Lf", &b.f16, &b.ff, &b.fd);
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}
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