| /************************************************************************ |
| * |
| * 18.limits.stdcxx-436.cpp - test case from STDCXX-436 issue |
| * |
| * $Id$ |
| * |
| *************************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed |
| * with this work for additional information regarding copyright |
| * ownership. The ASF licenses this file to you under the Apache |
| * License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| * |
| **************************************************************************/ |
| |
| #include <assert.h> // for assert() |
| #include <limits.h> // for MB_LEN_MAX |
| |
| // tell Compaq C++ we need the declaration of the POSIX popen() function |
| // that's guarded (not declared) in the compiler's pure C++ libc headers |
| #undef __PURE_CNAME |
| #include <stdio.h> // for popen(), fscanf(), pclose(), ... |
| |
| #ifdef _WIN32 |
| # define popen _popen |
| # define pclose _pclose |
| #endif // _WIN32 |
| |
| int main () |
| { |
| // assumes getconf is in the path. on most unix systems it is in |
| // '/usr/bin' and it doesn't exist on most win32 configurations, |
| // yet somehow this appears to work on windows, but not sure how. |
| |
| FILE* f = popen ("getconf MB_LEN_MAX", "r"); |
| if (f) { |
| |
| int mb_len_max = -1; |
| |
| const bool failed = fscanf (f, "%d", &mb_len_max) != 1; |
| |
| pclose (f); |
| |
| // if getconf isn't available, or getconf doesn't know the limit |
| // the scan will fail, so we must handle both situations. |
| assert (failed || MB_LEN_MAX == mb_len_max); |
| } |
| |
| return 0; |
| } |