1f51a89d39
These were ignored by git accidentally. We want ALL OF THEM since they all came in the llvm/clang source distribution.
124 lines
6.6 KiB
C
124 lines
6.6 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify -triple i386-apple-darwin9 -Wformat-nonliteral %s
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// Test that -Wformat=0 works:
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// RUN: %clang_cc1 -fsyntax-only -Werror -Wformat=0 %s
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#include <stdarg.h>
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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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int my_scanf(const char * restrict, ...) __attribute__((__format__(__scanf__, 1, 2)));
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int vscanf(const char * restrict, va_list);
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int vfscanf(FILE * restrict, const char * restrict, va_list);
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int vsscanf(const char * restrict, const char * restrict, va_list);
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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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char str[100];
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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, str); // expected-warning{{no closing ']' for '%[' in scanf format string}}
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scanf("%[", str); // expected-warning{{no closing ']' for '%[' in scanf format string}}
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const char kFormat3[] = "%hu"; // expected-note{{format string is defined here}}}
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scanf(kFormat3, &i); // expected-warning {{format specifies type 'unsigned short *' but the argument}}
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const char kFormat4[] = "%lp"; // expected-note{{format string is defined here}}}
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scanf(kFormat4, &i); // expected-warning {{length modifier 'l' results in undefined behavior or no effect with 'p' conversion specifier}}
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}
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void test_variants(int *i, const char *s, ...) {
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FILE *f = 0;
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char buf[100];
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fscanf(f, "%ld", i); // expected-warning{{format specifies type 'long *' but the argument has type 'int *'}}
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sscanf(buf, "%ld", i); // expected-warning{{format specifies type 'long *' but the argument has type 'int *'}}
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my_scanf("%ld", i); // expected-warning{{format specifies type 'long *' but the argument has type 'int *'}}
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va_list ap;
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va_start(ap, s);
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vscanf("%[abc", ap); // expected-warning{{no closing ']' for '%[' in scanf format string}}
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vfscanf(f, "%[abc", ap); // expected-warning{{no closing ']' for '%[' in scanf format string}}
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vsscanf(buf, "%[abc", ap); // expected-warning{{no closing ']' for '%[' in scanf format string}}
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}
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void test_scanlist(int *ip, char *sp, wchar_t *ls) {
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scanf("%[abc]", ip); // expected-warning{{format specifies type 'char *' but the argument has type 'int *'}}
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scanf("%h[abc]", sp); // expected-warning{{length modifier 'h' results in undefined behavior or no effect with '[' conversion specifier}}
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scanf("%l[xyx]", ls); // no-warning
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scanf("%ll[xyx]", ls); // expected-warning {{length modifier 'll' results in undefined behavior or no effect with '[' conversion specifier}}
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}
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void test_alloc_extension(char **sp, wchar_t **lsp, float *fp) {
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/* Make sure "%a" gets parsed as a conversion specifier for float,
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* even when followed by an 's', 'S' or '[', which would cause it to be
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* parsed as a length modifier in C90. */
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scanf("%as", sp); // expected-warning{{format specifies type 'float *' but the argument has type 'char **'}}
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scanf("%aS", lsp); // expected-warning{{format specifies type 'float *' but the argument has type 'wchar_t **'}}
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scanf("%a[bcd]", sp); // expected-warning{{format specifies type 'float *' but the argument has type 'char **'}}
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// Test that the 'm' length modifier is only allowed with s, S, c, C or [.
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// TODO: Warn that 'm' is an extension.
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scanf("%ms", sp); // No warning.
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scanf("%mS", lsp); // No warning.
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scanf("%mc", sp); // No warning.
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scanf("%mC", lsp); // No warning.
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scanf("%m[abc]", sp); // No warning.
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scanf("%md", sp); // expected-warning{{length modifier 'm' results in undefined behavior or no effect with 'd' conversion specifier}}
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// Test argument type check for the 'm' length modifier.
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scanf("%ms", fp); // expected-warning{{format specifies type 'char **' but the argument has type 'float *'}}
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scanf("%mS", fp); // expected-warning{{format specifies type 'wchar_t **' (aka 'int **') but the argument has type 'float *'}}
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scanf("%mc", fp); // expected-warning{{format specifies type 'char **' but the argument has type 'float *'}}
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scanf("%mC", fp); // expected-warning{{format specifies type 'wchar_t **' (aka 'int **') but the argument has type 'float *'}}
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scanf("%m[abc]", fp); // expected-warning{{format specifies type 'char **' but the argument has type 'float *'}}
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}
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void test_longlong(long long *x, unsigned long long *y) {
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scanf("%Ld", y); // no-warning
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scanf("%Lu", y); // no-warning
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scanf("%Lx", y); // no-warning
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scanf("%Ld", x); // no-warning
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scanf("%Lu", x); // no-warning
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scanf("%Lx", x); // no-warning
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scanf("%Ls", "hello"); // expected-warning {{length modifier 'L' results in undefined behavior or no effect with 's' conversion specifier}}
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}
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void test_quad(int *x, long long *llx) {
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scanf("%qd", x); // expected-warning{{format specifies type 'long long *' but the argument has type 'int *'}}
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scanf("%qd", llx); // no-warning
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}
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