blob: fdb9a13d27b8d69148018ed1e95e9c1623b8e0e2 [file] [log] [blame]
/* 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 "Charmonizer/Core/Compiler.h"
#include "Charmonizer/Core/ConfWriter.h"
#include "Charmonizer/Core/HeaderChecker.h"
#include "Charmonizer/Probe/Strings.h"
#include <stdlib.h>
/* Check for C99-compatible snprintf and possible replacements.
*/
static void
chaz_Strings_probe_c99_snprintf(void);
void
chaz_Strings_run(void) {
chaz_ConfWriter_start_module("Strings");
/* Check for C99 snprintf. */
chaz_Strings_probe_c99_snprintf();
chaz_ConfWriter_end_module();
}
static void
chaz_Strings_probe_c99_snprintf(void) {
static const char snprintf_code[] =
CHAZ_QUOTE( #include <stdio.h> )
CHAZ_QUOTE( int main() { )
CHAZ_QUOTE( char buf[4]; )
CHAZ_QUOTE( int result; )
CHAZ_QUOTE( result = snprintf(buf, 4, "%s", "12345"); )
CHAZ_QUOTE( printf("%d", result); )
CHAZ_QUOTE( return 0; )
CHAZ_QUOTE( } );
char *output = NULL;
size_t output_len;
/* If the buffer passed to snprintf is too small, verify that snprintf
* returns the length of the untruncated string which would have been
* written to a large enough buffer.
*/
output = chaz_CC_capture_output(snprintf_code, &output_len);
if (output != NULL) {
long result = strtol(output, NULL, 10);
if (result == 5) {
chaz_ConfWriter_add_def("HAS_C99_SNPRINTF", NULL);
}
free(output);
}
/* Test for _scprintf and _snprintf found in the MSVCRT.
*/
if (chaz_HeadCheck_defines_symbol("_scprintf", "#include <stdio.h>")) {
chaz_ConfWriter_add_def("HAS__SCPRINTF", NULL);
}
if (chaz_HeadCheck_defines_symbol("_snprintf", "#include <stdio.h>")) {
chaz_ConfWriter_add_def("HAS__SNPRINTF", NULL);
}
}