clang/test/Sema/format-strings-gnu.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify -triple i386-apple-darwin9 %s
   2 // RUN: %clang_cc1 -fsyntax-only -verify -triple thumbv6-apple-ios4.0 %s
   3 // RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-mingw32 -DMS %s
   4 // RUN: %clang_cc1 -fsyntax-only -verify -triple i686-pc-win32 -DMS %s
   5
   6 // RUN: %clang_cc1 -fsyntax-only -verify -triple i686-linux-gnu -DALLOWED %s
   7 // RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-unknown-freebsd -DALLOWED %s
   8
   9 int printf(const char *restrict, ...);
  10 int scanf(const char * restrict, ...) ;
  11
  12 void test(void) {
  13   long notLongEnough = 1;
  14   long long quiteLong = 2;
  15
  16   printf("%Ld", notLongEnough); // expected-warning {{format specifies type 'long long' but the argument has type 'long'}}
  17   printf("%Ld", quiteLong);
  18
  19 #ifndef ALLOWED
  20   // expected-warning@-4 {{length modifier 'L' results in undefined behavior or no effect with 'd' conversion specifier}}
  21   // expected-note@-5 {{did you mean to use 'll'?}}
  22
  23   // expected-warning@-6 {{length modifier 'L' results in undefined behavior or no effect with 'd' conversion specifier}}
  24   // expected-note@-7 {{did you mean to use 'll'?}}
  25 #endif
  26
  27 #ifndef MS
  28   printf("%Z\n", quiteLong); // expected-warning{{invalid conversion specifier 'Z'}}
  29 #endif
  30 }
  31
  32 void testAlwaysInvalid(void) {
  33   // We should not suggest 'll' here!
  34   printf("%Lc", 'a'); // expected-warning {{length modifier 'L' results in undefined behavior or no effect with 'c' conversion specifier}}
  35   printf("%Ls", "a"); // expected-warning {{length modifier 'L' results in undefined behavior or no effect with 's' conversion specifier}}
  36 }
  37
  38 #ifdef ALLOWED
  39 // PR 9466: clang: doesn't know about %Lu, %Ld, and %Lx
  40 void printf_longlong(long long x, unsigned long long y) {
  41   printf("%Ld", y); // no-warning
  42   printf("%Lu", y); // no-warning
  43   printf("%Lx", y); // no-warning
  44   printf("%Ld", x); // no-warning
  45   printf("%Lu", x); // no-warning
  46   printf("%Lx", x); // no-warning
  47   printf("%Ls", "hello"); // expected-warning {{length modifier 'L' results in undefined behavior or no effect with 's' conversion specifier}}
  48 }
  49
  50 void scanf_longlong(long long *x, unsigned long long *y) {
  51   scanf("%Ld", y); // no-warning
  52   scanf("%Lu", y); // no-warning
  53   scanf("%Lx", y); // no-warning
  54   scanf("%Ld", x); // no-warning
  55   scanf("%Lu", x); // no-warning
  56   scanf("%Lx", x); // no-warning
  57   scanf("%Ls", "hello"); // expected-warning {{length modifier 'L' results in undefined behavior or no effect with 's' conversion specifier}}
  58 }
  59 #endif