зеркало из https://github.com/microsoft/clang-1.git
74 строки
2.6 KiB
C
74 строки
2.6 KiB
C
// RUN: clang -fsyntax-only -verify %s
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#include <stdio.h>
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#include <stdarg.h>
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char * global_fmt;
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void check_string_literal( FILE* fp, const char* s, char *buf, ... ) {
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char * b;
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va_list ap;
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va_start(ap,buf);
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printf(s); // expected-warning {{format string is not a string literal}}
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vprintf(s,ap); // // no-warning
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fprintf(fp,s); // expected-warning {{format string is not a string literal}}
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vfprintf(fp,s,ap); // no-warning
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asprintf(&b,s); // expected-warning {{format string is not a string lit}}
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vasprintf(&b,s,ap); // no-warning
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sprintf(buf,s); // expected-warning {{format string is not a string literal}}
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snprintf(buf,2,s); // expected-warning {{format string is not a string lit}}
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vsprintf(buf,s,ap); // no-warning
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vsnprintf(buf,2,s,ap); // no-warning
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vsnprintf(buf,2,global_fmt,ap); // expected-warning {{format string is not a string literal}}
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}
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void check_writeback_specifier()
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{
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int x;
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char *b;
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printf("%n",&x); // expected-warning {{'%n' in format string discouraged}}
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sprintf(b,"%d%%%n",1, &x); // expected-warning {{'%n' in format string dis}}
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}
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void check_invalid_specifier(FILE* fp, char *buf)
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{
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printf("%s%lb%d","unix",10,20); // expected-warning {{lid conversion '%lb'}}
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fprintf(fp,"%%%l"); // expected-warning {{lid conversion '%l'}}
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sprintf(buf,"%%%%%ld%d%d", 1, 2, 3); // no-warning
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snprintf(buf, 2, "%%%%%ld%;%d", 1, 2, 3); // expected-warning {{sion '%;'}}
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}
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void check_null_char_string(char* b)
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{
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printf("\0this is bogus%d",1); // expected-warning {{string contains '\0'}}
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snprintf(b,10,"%%%%%d\0%d",1,2); // expected-warning {{string contains '\0'}}
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printf("%\0d",1); // expected-warning {{string contains '\0'}}
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}
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void check_empty_format_string(char* buf, ...)
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{
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va_list ap;
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va_start(ap,buf);
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vprintf("",ap); // expected-warning {{format string is empty}}
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sprintf(buf,""); // expected-warning {{format string is empty}}
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}
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void check_wide_string(char* b, ...)
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{
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va_list ap;
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va_start(ap,b);
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printf(L"foo %d",2); // expected-warning {{should not be a wide string}}
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vasprintf(&b,L"bar %d",ap); // expected-warning {{should not be a wide string}}
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}
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void check_asterisk_precision_width(int x) {
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printf("%*d"); // expected-warning {{'*' specified field width is missing a matching 'int' argument}}
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printf("%.*d"); // expected-warning {{'.*' specified field precision is missing a matching 'int' argument}}
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printf("%*d",12,x); // no-warning
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printf("%*d","foo",x); // expected-warning {{field width should have type 'int', but argument has type 'char *'}}
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printf("%.*d","foo",x); // expected-warning {{field precision should have type 'int', but argument has type 'char *'}}
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} |