clang/test/SemaCXX/builtins-va_arg.cpp

   1 // RUN: %clang_cc1 %s -ffreestanding
   2 // RUN: %clang_cc1 %s -ffreestanding -triple i686-unknown-linux
   3 // RUN: %clang_cc1 %s -ffreestanding -triple x86_64-unknown-linux
   4 // RUN: %clang_cc1 %s -ffreestanding -triple mips-unknown-linux
   5 // RUN: %clang_cc1 %s -ffreestanding -triple mipsel-unknown-linux
   6 // RUN: %clang_cc1 %s -ffreestanding -triple armv7-unknown-linux-gnueabi
   7 // RUN: %clang_cc1 %s -ffreestanding -triple thumbv7-unknown-linux-gnueabi
   8
   9 #include "stdarg.h"
  10
  11 int int_accumulator = 0;
  12 double double_accumulator = 0;
  13
  14 int test_vprintf(const char *fmt, va_list ap) {
  15   char ch;
  16   int result = 0;
  17   while (*fmt != '\0') {
  18     ch = *fmt++;
  19     if (ch != '%') {
  20       continue;
  21     }
  22
  23     ch = *fmt++;
  24     switch (ch) {
  25     case 'd':
  26       int_accumulator += va_arg(ap, int);
  27       result++;
  28       break;
  29
  30     case 'f':
  31       double_accumulator += va_arg(ap, double);
  32       result++;
  33       break;
  34
  35     default:
  36       break;
  37     }
  38
  39     if (ch == '0') {
  40       break;
  41     }
  42   }
  43   return result;
  44 }
  45
  46 int test_printf(const char *fmt, ...) {
  47   va_list ap;
  48   va_start(ap, fmt);
  49   int result = test_vprintf(fmt, ap);
  50   va_end(ap);
  51   return result;
  52 }