void check_string_literal( FILE* fp, const char* s, char *buf, ... ) { char * b; va_list ap; va_start(ap,buf); printf(s); // expected-warning {{format string is not a string literal}} vprintf(s,ap); // // no-warning fprintf(fp,s); // expected-warning {{format string is not a string literal}} vfprintf(fp,s,ap); // no-warning asprintf(&b,s); // expected-warning {{format string is not a string lit}} vasprintf(&b,s,ap); // no-warning sprintf(buf,s); // expected-warning {{format string is not a string literal}} snprintf(buf,2,s); // expected-warning {{format string is not a string lit}} __builtin___sprintf_chk(buf,0,-1,s); // expected-warning {{format string is not a string literal}} __builtin___snprintf_chk(buf,2,0,-1,s); // expected-warning {{format string is not a string lit}} vsprintf(buf,s,ap); // no-warning vsnprintf(buf,2,s,ap); // no-warning vsnprintf(buf,2,global_fmt,ap); // expected-warning {{format string is not a string literal}} __builtin___vsnprintf_chk(buf,2,0,-1,s,ap); // no-warning __builtin___vsnprintf_chk(buf,2,0,-1,global_fmt,ap); // expected-warning {{format string is not a string literal}} // rdar://6079877 printf("abc" "%*d", 1, 1); // no-warning printf("abc\ def" "%*d", 1, 1); // no-warning // <rdar://problem/6079850>, allow 'unsigned' (instead of 'int') to be used for both // the field width and precision. This deviates from C99, but is reasonably safe // and is also accepted by GCC. printf("%*d", (unsigned) 1, 1); // no-warning }
void check_string_literal( FILE* fp, const char* s, char *buf, ... ) { char * b; va_list ap; va_start(ap,buf); printf(s); // expected-warning {{format string is not a string literal}} vprintf(s,ap); // // no-warning fprintf(fp,s); // expected-warning {{format string is not a string literal}} vfprintf(fp,s,ap); // no-warning asprintf(&b,s); // expected-warning {{format string is not a string lit}} vasprintf(&b,s,ap); // no-warning sprintf(buf,s); // expected-warning {{format string is not a string literal}} snprintf(buf,2,s); // expected-warning {{format string is not a string lit}} __builtin___sprintf_chk(buf,0,-1,s); // expected-warning {{format string is not a string literal}} __builtin___snprintf_chk(buf,2,0,-1,s); // expected-warning {{format string is not a string lit}} vsprintf(buf,s,ap); // no-warning vsnprintf(buf,2,s,ap); // no-warning vsnprintf(buf,2,global_fmt,ap); // expected-warning {{format string is not a string literal}} __builtin___vsnprintf_chk(buf,2,0,-1,s,ap); // no-warning __builtin___vsnprintf_chk(buf,2,0,-1,global_fmt,ap); // expected-warning {{format string is not a string literal}} // rdar://6079877 printf("abc" "%*d", (unsigned) 1, 1); // expected-warning {{field width should have type 'int'}} printf("abc\ def" "%*d", (unsigned) 1, 1); // expected-warning {{field width should have type 'int'}} }
void check_string_literal2( FILE* fp, const char* s, char *buf, ... ) { char * b; va_list ap; va_start(ap,buf); printf(s); // expected-warning {{format string is not a string literal}} vprintf(s,ap); // no-warning fprintf(fp,s); // expected-warning {{format string is not a string literal}} vfprintf(fp,s,ap); // no-warning asprintf(&b,s); // expected-warning {{format string is not a string lit}} vasprintf(&b,s,ap); // no-warning sprintf(buf,s); // expected-warning {{format string is not a string literal}} snprintf(buf,2,s); // expected-warning {{format string is not a string lit}} __builtin___vsnprintf_chk(buf,2,0,-1,s,ap); // no-warning vscanf(s, ap); // expected-warning {{format string is not a string literal}} }
// rdar://6252231 - cannot call vsnprintf with va_list on x86_64 void f4(const char *fmt, ...) { __builtin_va_list args; __builtin___vsnprintf_chk (0, 42, 0, 11, fmt, args); // expected-warning {{'__builtin___vsnprintf_chk' will always overflow; destination buffer has size 11, but size argument is 42}} }