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Fix compiler warnings about not used dummy() functions

It has been reported that the Microsoft Visual C compiler complains if
a .c file do not contain any compilable code, which can happen if the
code has been #ifdef'ed out. To avoid this, these #ifdef sections have
a #else section which adds a static dummy() function which does nothing.

On the other hand, the GNU C compiler complains about unused functions when
it discovers this situation.

This patch tries to only add these dummy() functions if the Microsoft Visual C
compiler is detected, via the _MSC_VER macro.

Signed-off-by: David Sommerseth <dazo@users.sourceforge.net>
Acked-by: Peter Stuge <peter@stuge.se>

David Sommerseth authored on 2010/11/15 16:48:57
Showing 4 changed files

cryptoapi.c index 8fb5387..3365cd7 100644
ieproxy.c index 89977a8..3099870 100644
perf.c index a149c07..67ea958 100644
pkcs11.c index e06a2ed..d90ac96 100644

cryptoapi.c

History View file @ eabb8ee

@@ -470,5 +470,7 @@ int SSL_CTX_use_CryptoAPI_certificate(SSL_CTX *ssl_ctx, const char *cert_prop)
+                     }
                      #else
                     +#ifdef _MSC_VER  /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
                      static void dummy (void) {}
                     +#endif
                      #endif				/* WIN32 */

ieproxy.c

History View file @ eabb8ee

@@ -139,7 +139,8 @@ LPCTSTR getIeHttpProxy()
                          return(NULL);
+                       }
+                     }
+                    -
                      #else
                     +#ifdef _MSC_VER  /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
                      static void dummy (void) {}
                     +#endif
                      #endif				/* WIN32 */

perf.c

History View file @ eabb8ee

@@ -287,5 +287,7 @@ perf_print_state (int lev)
+                     }
                      #else
                     +#ifdef _MSC_VER  /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
                      static void dummy(void) {}
                      #endif
                     +#endif

pkcs11.c

History View file @ eabb8ee

@@ -982,5 +982,7 @@ cleanup:
+                     }
                      #else
                     +#ifdef _MSC_VER  /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
                      static void dummy (void) {}
                     +#endif
                      #endif /* ENABLE_PKCS11 */