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Fix unused variable/function compilation warnings

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This PR fixes a number of unused variable/function compilation warnings
that arise when using a config.h that does not define the macro
MBEDTLS_PEM_PARSE_C.
This commit is contained in:
Andres AG 2016-12-07 15:05:53 +00:00 committed by Simon Butcher
parent d15423446b
commit c0db511820
4 changed files with 6 additions and 3 deletions
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3
ChangeLog
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@ -5,6 +5,9 @@ mbed TLS ChangeLog (Sorted per branch, date)
Bugfix Bugfix
* Fix redefinition of macro ssl_set_bio to undefined symbol * Fix redefinition of macro ssl_set_bio to undefined symbol
mbedtls_ssl_set_bio_timeout in compat-1.3.h. #673 mbedtls_ssl_set_bio_timeout in compat-1.3.h. #673
* Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
x509_csr.c that are reported when building mbed TLS with a config.h that
does not define MBEDTLS_PEM_PARSE_C. #562
* Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
the input string in PEM format to extract the different components. Found the input string in PEM format to extract the different components. Found
by Eyal Itkin. by Eyal Itkin.

2
library/pem.c
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@ -44,12 +44,12 @@
#define mbedtls_free free #define mbedtls_free free
#endif #endif
#if defined(MBEDTLS_PEM_PARSE_C)
/* Implementation that should never be optimized out by the compiler */ /* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) { static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0; volatile unsigned char *p = v; while( n-- ) *p++ = 0;
} }
#if defined(MBEDTLS_PEM_PARSE_C)
void mbedtls_pem_init( mbedtls_pem_context *ctx ) void mbedtls_pem_init( mbedtls_pem_context *ctx )
{ {
memset( ctx, 0, sizeof( mbedtls_pem_context ) ); memset( ctx, 0, sizeof( mbedtls_pem_context ) );

2
library/x509_crt.c
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@ -969,8 +969,8 @@ int mbedtls_x509_crt_parse_der( mbedtls_x509_crt *chain, const unsigned char *bu
*/ */
int mbedtls_x509_crt_parse( mbedtls_x509_crt *chain, const unsigned char *buf, size_t buflen ) int mbedtls_x509_crt_parse( mbedtls_x509_crt *chain, const unsigned char *buf, size_t buflen )
{ {
int success = 0, first_error = 0, total_failed = 0;
#if defined(MBEDTLS_PEM_PARSE_C) #if defined(MBEDTLS_PEM_PARSE_C)
int success = 0, first_error = 0, total_failed = 0;
int buf_format = MBEDTLS_X509_FORMAT_DER; int buf_format = MBEDTLS_X509_FORMAT_DER;
#endif #endif

2
library/x509_csr.c
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@ -265,8 +265,8 @@ int mbedtls_x509_csr_parse_der( mbedtls_x509_csr *csr,
*/ */
int mbedtls_x509_csr_parse( mbedtls_x509_csr *csr, const unsigned char *buf, size_t buflen ) int mbedtls_x509_csr_parse( mbedtls_x509_csr *csr, const unsigned char *buf, size_t buflen )
{ {
int ret;
#if defined(MBEDTLS_PEM_PARSE_C) #if defined(MBEDTLS_PEM_PARSE_C)
int ret;
size_t use_len; size_t use_len;
mbedtls_pem_context pem; mbedtls_pem_context pem;
#endif #endif