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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.
*/
/**
* This feature detects if the compiler properly pops diagnostics
*/
#include <stdint.h>
#define MACRO_CHECK \
do { \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic error \"-Wconversion\"") \
return -1; \
_Pragma("GCC diagnostic pop") \
} while (0)
int signed_fun()
{
MACRO_CHECK;
}
/* This function is here to ensure the compiler properly pops the previous diagnostic.
*
* GCC 4 and lower don't correctly pop diagnostics so this will fail on those systems.
**/
uint8_t unsigned_fun()
{
return -1;
}
int main()
{
signed_fun();
unsigned_fun();
MACRO_CHECK;
}
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