[xmlsec] Silence bogus unused return values - Clang complains (Simo Sorce, Red Hat)

[Aleksey Sanin <aleksey src gnome org>]

commit 056c082fcf9e2485c9ea5156989d39a699b969f9
Author: Aleksey Sanin <aleksey aleksey com>
Date:   Wed Jun 4 09:27:58 2014 -0700

    Silence bogus unused return values - Clang complains (Simo Sorce, Red Hat)

 apps/xmlsec.c      |    2 +-
 src/openssl/app.c  |    4 ++--
 src/openssl/x509.c |    6 +++---
 src/xmldsig.c      |   48 ++++++++++++++++++++++++------------------------
 src/xmlenc.c       |   12 ++++++------
 5 files changed, 36 insertions(+), 36 deletions(-)
---
diff --git a/apps/xmlsec.c b/apps/xmlsec.c
index c2f3196..c9e5534 100644
--- a/apps/xmlsec.c
+++ b/apps/xmlsec.c
@@ -2986,7 +2986,7 @@ xmlSecAppWriteResult(xmlDocPtr doc, xmlSecBufferPtr buffer) {
     if(doc != NULL) {
         xmlDocDump(f, doc);    
     } else if((buffer != NULL) && (xmlSecBufferGetData(buffer) != NULL)) {
-        fwrite(xmlSecBufferGetData(buffer), xmlSecBufferGetSize(buffer), 1, f); 
+        (void)fwrite(xmlSecBufferGetData(buffer), xmlSecBufferGetSize(buffer), 1, f); 
     } else {
         fprintf(stderr, "Error: both result doc and result buffer are null\n"); 
         xmlSecAppCloseFile(f);
diff --git a/src/openssl/app.c b/src/openssl/app.c
index 4f8f79e..4154d2e 100644
--- a/src/openssl/app.c
+++ b/src/openssl/app.c
@@ -255,7 +255,7 @@ xmlSecOpenSSLAppKeyLoadBIO(BIO* bio, xmlSecKeyDataFormat format,
         }
         if(pKey == NULL) {
             /* go to start of the file and try to read public key */
-            BIO_reset(bio);
+            (void)BIO_reset(bio);
             pKey = PEM_read_bio_PUBKEY(bio, NULL,
                             XMLSEC_PTR_TO_FUNC(pem_password_cb, pwdCallback),
                             pwdCallbackCtx);
@@ -274,7 +274,7 @@ xmlSecOpenSSLAppKeyLoadBIO(BIO* bio, xmlSecKeyDataFormat format,
         pKey = d2i_PrivateKey_bio(bio, NULL);
         if(pKey == NULL) {
             /* go to start of the file and try to read public key */
-            BIO_reset(bio);
+            (void)BIO_reset(bio);
             pKey = d2i_PUBKEY_bio(bio, NULL);
             if(pKey == NULL) {
                 xmlSecError(XMLSEC_ERRORS_HERE,
diff --git a/src/openssl/x509.c b/src/openssl/x509.c
index 459a312..11f4571 100644
--- a/src/openssl/x509.c
+++ b/src/openssl/x509.c
@@ -1941,7 +1941,7 @@ xmlSecOpenSSLX509CertBase64DerWrite(X509* cert, int base64LineWrap) {
 
     /* todo: add error checks */
     i2d_X509_bio(mem, cert);
-    BIO_flush(mem);
+    (void)BIO_flush(mem);
 
     size = BIO_get_mem_data(mem, &p);
     if((size <= 0) || (p == NULL)){
@@ -2055,7 +2055,7 @@ xmlSecOpenSSLX509CrlBase64DerWrite(X509_CRL* crl, int base64LineWrap) {
 
     /* todo: add error checks */
     i2d_X509_CRL_bio(mem, crl);
-    BIO_flush(mem);
+    (void)BIO_flush(mem);
 
     size = BIO_get_mem_data(mem, &p);
     if((size <= 0) || (p == NULL)){
@@ -2111,7 +2111,7 @@ xmlSecOpenSSLX509NameWrite(X509_NAME* nm) {
         return(NULL);
     }
 
-    BIO_flush(mem); /* should call flush ? */
+    (void)BIO_flush(mem); /* should call flush ? */
 
     size = BIO_pending(mem);
     res = xmlMalloc(size + 1);
diff --git a/src/xmldsig.c b/src/xmldsig.c
index bf9a85b..10ba03f 100644
--- a/src/xmldsig.c
+++ b/src/xmldsig.c
@@ -1136,9 +1136,9 @@ xmlSecDSigCtxDebugDump(xmlSecDSigCtxPtr dsigCtx, FILE* output) {
        (xmlSecBufferGetData(dsigCtx->result) != NULL)) {
 
         fprintf(output, "== Result - start buffer:\n");
-        fwrite(xmlSecBufferGetData(dsigCtx->result),
-               xmlSecBufferGetSize(dsigCtx->result),
-               1, output);
+        (void)fwrite(xmlSecBufferGetData(dsigCtx->result),
+                     xmlSecBufferGetSize(dsigCtx->result),
+                     1, output);
         fprintf(output, "\n== Result - end buffer\n");
     }
     if(((dsigCtx->flags & XMLSEC_DSIG_FLAGS_STORE_SIGNATURE) != 0) &&
@@ -1146,9 +1146,9 @@ xmlSecDSigCtxDebugDump(xmlSecDSigCtxPtr dsigCtx, FILE* output) {
        (xmlSecBufferGetData(xmlSecDSigCtxGetPreSignBuffer(dsigCtx)) != NULL)) {
 
         fprintf(output, "== PreSigned data - start buffer:\n");
-        fwrite(xmlSecBufferGetData(xmlSecDSigCtxGetPreSignBuffer(dsigCtx)),
-               xmlSecBufferGetSize(xmlSecDSigCtxGetPreSignBuffer(dsigCtx)),
-               1, output);
+        (void)fwrite(xmlSecBufferGetData(xmlSecDSigCtxGetPreSignBuffer(dsigCtx)),
+                     xmlSecBufferGetSize(xmlSecDSigCtxGetPreSignBuffer(dsigCtx)),
+                     1, output);
         fprintf(output, "\n== PreSigned data - end buffer\n");
     }
 }
@@ -1225,9 +1225,9 @@ xmlSecDSigCtxDebugXmlDump(xmlSecDSigCtxPtr dsigCtx, FILE* output) {
        (xmlSecBufferGetData(dsigCtx->result) != NULL)) {
 
         fprintf(output, "<Result>");
-        fwrite(xmlSecBufferGetData(dsigCtx->result),
-               xmlSecBufferGetSize(dsigCtx->result),
-               1, output);
+        (void)fwrite(xmlSecBufferGetData(dsigCtx->result),
+                     xmlSecBufferGetSize(dsigCtx->result),
+                     1, output);
         fprintf(output, "</Result>\n");
     }
     if(((dsigCtx->flags & XMLSEC_DSIG_FLAGS_STORE_SIGNATURE) != 0) &&
@@ -1235,9 +1235,9 @@ xmlSecDSigCtxDebugXmlDump(xmlSecDSigCtxPtr dsigCtx, FILE* output) {
        (xmlSecBufferGetData(xmlSecDSigCtxGetPreSignBuffer(dsigCtx)) != NULL)) {
 
         fprintf(output, "<PreSignedData>");
-        fwrite(xmlSecBufferGetData(xmlSecDSigCtxGetPreSignBuffer(dsigCtx)),
-               xmlSecBufferGetSize(xmlSecDSigCtxGetPreSignBuffer(dsigCtx)),
-               1, output);
+        (void)fwrite(xmlSecBufferGetData(xmlSecDSigCtxGetPreSignBuffer(dsigCtx)),
+                     xmlSecBufferGetSize(xmlSecDSigCtxGetPreSignBuffer(dsigCtx)),
+                     1, output);
         fprintf(output, "</PreSignedData>\n");
     }
 
@@ -1687,9 +1687,9 @@ xmlSecDSigReferenceCtxDebugDump(xmlSecDSigReferenceCtxPtr dsigRefCtx, FILE* outp
        (xmlSecBufferGetData(xmlSecDSigReferenceCtxGetPreDigestBuffer(dsigRefCtx)) != NULL)) {
 
         fprintf(output, "== PreDigest data - start buffer:\n");
-        fwrite(xmlSecBufferGetData(xmlSecDSigReferenceCtxGetPreDigestBuffer(dsigRefCtx)),
-               xmlSecBufferGetSize(xmlSecDSigReferenceCtxGetPreDigestBuffer(dsigRefCtx)),
-               1, output);
+        (void)fwrite(xmlSecBufferGetData(xmlSecDSigReferenceCtxGetPreDigestBuffer(dsigRefCtx)),
+                     xmlSecBufferGetSize(xmlSecDSigReferenceCtxGetPreDigestBuffer(dsigRefCtx)),
+                     1, output);
         fprintf(output, "\n== PreDigest data - end buffer\n");
     }
 
@@ -1697,9 +1697,9 @@ xmlSecDSigReferenceCtxDebugDump(xmlSecDSigReferenceCtxPtr dsigRefCtx, FILE* outp
        (xmlSecBufferGetData(dsigRefCtx->result) != NULL)) {
 
         fprintf(output, "== Result - start buffer:\n");
-        fwrite(xmlSecBufferGetData(dsigRefCtx->result),
-               xmlSecBufferGetSize(dsigRefCtx->result), 1,
-               output);
+        (void)fwrite(xmlSecBufferGetData(dsigRefCtx->result),
+                     xmlSecBufferGetSize(dsigRefCtx->result), 1,
+                     output);
         fprintf(output, "\n== Result - end buffer\n");
     }
 }
@@ -1760,9 +1760,9 @@ xmlSecDSigReferenceCtxDebugXmlDump(xmlSecDSigReferenceCtxPtr dsigRefCtx, FILE* o
        (xmlSecBufferGetData(dsigRefCtx->result) != NULL)) {
 
         fprintf(output, "<Result>");
-        fwrite(xmlSecBufferGetData(dsigRefCtx->result),
-               xmlSecBufferGetSize(dsigRefCtx->result), 1,
-               output);
+        (void)fwrite(xmlSecBufferGetData(dsigRefCtx->result),
+                     xmlSecBufferGetSize(dsigRefCtx->result), 1,
+                     output);
         fprintf(output, "</Result>\n");
     }
 
@@ -1770,9 +1770,9 @@ xmlSecDSigReferenceCtxDebugXmlDump(xmlSecDSigReferenceCtxPtr dsigRefCtx, FILE* o
        (xmlSecBufferGetData(xmlSecDSigReferenceCtxGetPreDigestBuffer(dsigRefCtx)) != NULL)) {
 
         fprintf(output, "<PreDigestData>");
-        fwrite(xmlSecBufferGetData(xmlSecDSigReferenceCtxGetPreDigestBuffer(dsigRefCtx)),
-               xmlSecBufferGetSize(xmlSecDSigReferenceCtxGetPreDigestBuffer(dsigRefCtx)),
-               1, output);
+        (void)fwrite(xmlSecBufferGetData(xmlSecDSigReferenceCtxGetPreDigestBuffer(dsigRefCtx)),
+                     xmlSecBufferGetSize(xmlSecDSigReferenceCtxGetPreDigestBuffer(dsigRefCtx)),
+                     1, output);
         fprintf(output, "</PreDigestData>\n");
     }
     if(dsigRefCtx->dsigCtx->operation == xmlSecTransformOperationSign) {
diff --git a/src/xmlenc.c b/src/xmlenc.c
index 0480159..3d4e0d2 100644
--- a/src/xmlenc.c
+++ b/src/xmlenc.c
@@ -1218,9 +1218,9 @@ xmlSecEncCtxDebugDump(xmlSecEncCtxPtr encCtx, FILE* output) {
        (encCtx->resultBase64Encoded != 0)) {
 
         fprintf(output, "== Result - start buffer:\n");
-        fwrite(xmlSecBufferGetData(encCtx->result),
-               xmlSecBufferGetSize(encCtx->result), 1,
-               output);
+        (void)fwrite(xmlSecBufferGetData(encCtx->result),
+                     xmlSecBufferGetSize(encCtx->result), 1,
+                     output);
         fprintf(output, "\n== Result - end buffer\n");
     }
 }
@@ -1311,9 +1311,9 @@ xmlSecEncCtxDebugXmlDump(xmlSecEncCtxPtr encCtx, FILE* output) {
        (encCtx->resultBase64Encoded != 0)) {
 
         fprintf(output, "<Result>");
-        fwrite(xmlSecBufferGetData(encCtx->result),
-               xmlSecBufferGetSize(encCtx->result), 1,
-               output);
+        (void)fwrite(xmlSecBufferGetData(encCtx->result),
+                     xmlSecBufferGetSize(encCtx->result), 1,
+                     output);
         fprintf(output, "</Result>\n");
     }