Comment 19 for bug 180179

Folks, this bug is now 20 months old, and still no solution to this.
This is really bad practice to just ignore such bug reports since we deal here with a security-related library, and you make folks more and more accept compiler warnings which seem to be fixable from your side. When I f.e. compile a project like libcurl with NSS support these warnings in prlink.h add up to ~100 times! And disabling the warnings with -Wno-strict-prototypes is really not a solution.
BTW. I found some more places where I get similar warnings:
--- cert.h.orig 2009-07-01 01:05:24.000000000 +0200
+++ cert.h 2009-09-06 18:11:04.000000000 +0200
@@ -1610,25 +1610,25 @@
  * Returns a pointer to a static structure.
  */
 extern const CERTRevocationFlags*
-CERT_GetPKIXVerifyNistRevocationPolicy();
+CERT_GetPKIXVerifyNistRevocationPolicy(void);

 /*
  * Returns a pointer to a static structure.
  */
 extern const CERTRevocationFlags*
-CERT_GetClassicOCSPEnabledSoftFailurePolicy();
+CERT_GetClassicOCSPEnabledSoftFailurePolicy(void);

 /*
  * Returns a pointer to a static structure.
  */
 extern const CERTRevocationFlags*
-CERT_GetClassicOCSPEnabledHardFailurePolicy();
+CERT_GetClassicOCSPEnabledHardFailurePolicy(void);

 /*
  * Returns a pointer to a static structure.
  */
 extern const CERTRevocationFlags*
-CERT_GetClassicOCSPDisabledPolicy();
+CERT_GetClassicOCSPDisabledPolicy(void);

 /*
  * Verify a Cert with libpkix
@@ -1662,7 +1662,7 @@

 /* The function return PR_TRUE if cert validation should use
  * libpkix cert validation engine. */
-PRBool CERT_GetUsePKIXForValidation();
+PRBool CERT_GetUsePKIXForValidation(void);

 SEC_END_PROTOS

I think you should just apply the void fix, and as time passes by we will see if others will report new problems with the fixes (which I doubt).