forked from OSchip/llvm-project
47 lines
2.4 KiB
C
47 lines
2.4 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify -Wformat-nonliteral %s
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typedef __typeof(sizeof(int)) size_t;
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typedef struct _FILE FILE;
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typedef __WCHAR_TYPE__ wchar_t;
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int fscanf(FILE * restrict, const char * restrict, ...) ;
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int scanf(const char * restrict, ...) ;
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int sscanf(const char * restrict, const char * restrict, ...) ;
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void test(const char *s, int *i) {
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scanf(s, i); // expected-warning{{ormat string is not a string literal}}
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scanf("%0d", i); // expected-warning{{zero field width in scanf format string is unused}}
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scanf("%00d", i); // expected-warning{{zero field width in scanf format string is unused}}
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scanf("%d%[asdfasdfd", i, s); // expected-warning{{no closing ']' for '%[' in scanf format string}}
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unsigned short s_x;
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scanf ("%" "hu" "\n", &s_x); // no-warning
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scanf("%y", i); // expected-warning{{invalid conversion specifier 'y'}}
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scanf("%%"); // no-warning
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scanf("%%%1$d", i); // no-warning
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scanf("%1$d%%", i); // no-warning
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scanf("%d", i, i); // expected-warning{{data argument not used by format string}}
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scanf("%*d", i); // // expected-warning{{data argument not used by format string}}
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scanf("%*d", i); // // expected-warning{{data argument not used by format string}}
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scanf("%*d%1$d", i); // no-warning
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}
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void bad_length_modifiers(char *s, void *p, wchar_t *ws, long double *ld) {
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scanf("%hhs", "foo"); // expected-warning{{length modifier 'hh' results in undefined behavior or no effect with 's' conversion specifier}}
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scanf("%1$zp", p); // expected-warning{{length modifier 'z' results in undefined behavior or no effect with 'p' conversion specifier}}
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scanf("%ls", ws); // no-warning
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scanf("%#.2Lf", ld); // expected-warning{{invalid conversion specifier '#'}}
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}
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// Test that the scanf call site is where the warning is attached. If the
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// format string is somewhere else, point to it in a note.
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void pr9751() {
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int *i;
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const char kFormat1[] = "%00d"; // expected-note{{format string is defined here}}}
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scanf(kFormat1, i); // expected-warning{{zero field width in scanf format string is unused}}
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scanf("%00d", i); // expected-warning{{zero field width in scanf format string is unused}}
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const char kFormat2[] = "%["; // expected-note{{format string is defined here}}}
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scanf(kFormat2, &i); // expected-warning{{no closing ']' for '%[' in scanf format string}}
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scanf("%[", &i); // expected-warning{{no closing ']' for '%[' in scanf format string}}
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}
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