forked from OSchip/llvm-project
82 lines
3.1 KiB
C
82 lines
3.1 KiB
C
// RUN: clang -fsyntax-only -verify %s
|
|
|
|
// Define this to get vasprintf on Linux
|
|
#define _GNU_SOURCE
|
|
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
|
|
char * global_fmt;
|
|
|
|
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}}
|
|
}
|
|
|
|
void check_writeback_specifier()
|
|
{
|
|
int x;
|
|
char *b;
|
|
|
|
printf("%n",&x); // expected-warning {{'%n' in format string discouraged}}
|
|
sprintf(b,"%d%%%n",1, &x); // expected-warning {{'%n' in format string dis}}
|
|
}
|
|
|
|
void check_invalid_specifier(FILE* fp, char *buf)
|
|
{
|
|
printf("%s%lb%d","unix",10,20); // expected-warning {{lid conversion '%lb'}}
|
|
fprintf(fp,"%%%l"); // expected-warning {{lid conversion '%l'}}
|
|
sprintf(buf,"%%%%%ld%d%d", 1, 2, 3); // no-warning
|
|
snprintf(buf, 2, "%%%%%ld%;%d", 1, 2, 3); // expected-warning {{sion '%;'}}
|
|
}
|
|
|
|
void check_null_char_string(char* b)
|
|
{
|
|
printf("\0this is bogus%d",1); // expected-warning {{string contains '\0'}}
|
|
snprintf(b,10,"%%%%%d\0%d",1,2); // expected-warning {{string contains '\0'}}
|
|
printf("%\0d",1); // expected-warning {{string contains '\0'}}
|
|
}
|
|
|
|
void check_empty_format_string(char* buf, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap,buf);
|
|
vprintf("",ap); // expected-warning {{format string is empty}}
|
|
sprintf(buf,""); // expected-warning {{format string is empty}}
|
|
}
|
|
|
|
void check_wide_string(char* b, ...)
|
|
{
|
|
va_list ap;
|
|
va_start(ap,b);
|
|
|
|
printf(L"foo %d",2); // expected-warning {{incompatible pointer types}}, expected-warning {{should not be a wide string}}
|
|
vasprintf(&b,L"bar %d",ap); // expected-warning {{incompatible pointer types}}, expected-warning {{should not be a wide string}}
|
|
}
|
|
|
|
void check_asterisk_precision_width(int x) {
|
|
printf("%*d"); // expected-warning {{'*' specified field width is missing a matching 'int' argument}}
|
|
printf("%.*d"); // expected-warning {{'.*' specified field precision is missing a matching 'int' argument}}
|
|
printf("%*d",12,x); // no-warning
|
|
printf("%*d","foo",x); // expected-warning {{field width should have type 'int', but argument has type 'char *'}}
|
|
printf("%.*d","foo",x); // expected-warning {{field precision should have type 'int', but argument has type 'char *'}}
|
|
}
|