Test assumptions we make about the platform
Things that are not guaranteed by the standard but should be true of all platforms of interest to us: - 8-bit chars - NULL pointers represented by all-bits-zero
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@ -30,6 +30,15 @@
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#ifndef MBEDTLS_CHECK_CONFIG_H
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#define MBEDTLS_CHECK_CONFIG_H
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/*
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* We assume CHAR_BIT is 8 in many places. In practice, this is true on our
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* target platforms, so not an issue, but let's just be extra sure.
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*/
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#include <limits.h>
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#if CHAR_BIT != 8
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#error "mbed TLS requires a platform with 8-bit chars"
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#endif
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#if defined(MBEDTLS_DEPRECATED_WARNING) && \
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!defined(__GNUC__) && !defined(__clang__)
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#error "MBEDTLS_DEPRECATED_WARNING only works with GCC and Clang"
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@ -72,6 +72,19 @@ int main( int argc, char *argv[] )
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#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
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unsigned char buf[1000000];
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#endif
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void *pointer;
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/*
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* The C standard doesn't guarantee that all-bits-0 is the representation
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* of a NULL pointer. We do however use that in our code for initializing
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* structures, which should work on every modern platform. Let's be sure.
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*/
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memset( &pointer, 0, sizeof( void * ) );
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if( pointer != NULL )
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{
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mbedtls_printf( "all-bits-zero is not a NULL pointer\n" );
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return( 1 );
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}
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if( argc == 2 && strcmp( argv[1], "-quiet" ) == 0 )
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v = 0;
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@ -216,6 +216,7 @@ int main()
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FILE *file;
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char buf[5000];
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char *params[50];
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void *pointer;
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#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) && \
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!defined(TEST_SUITE_MEMORY_BUFFER_ALLOC)
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@ -223,6 +224,18 @@ int main()
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mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) );
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#endif
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/*
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* The C standard doesn't guarantee that all-bits-0 is the representation
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* of a NULL pointer. We do however use that in our code for initializing
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* structures, which should work on every modern platform. Let's be sure.
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*/
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memset( &pointer, 0, sizeof( void * ) );
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if( pointer != NULL )
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{
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mbedtls_fprintf( stderr, "all-bits-zero is not a NULL pointer\n" );
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return( 1 );
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}
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file = fopen( filename, "r" );
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if( file == NULL )
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{
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