r17472@catbus: nickm | 2008-01-05 22:10:19 -0500

 Another test for the increasingly bad check-spaces style checker to check: #else\n#if is almost a sure sign of a failure to use #elif.  Fortunately, we only did that 3 times.


svn:r13039

contrib/checkSpace.pl

@@ -9,6 +9,7 @@ if ($ARGV[0] =~ /^-/) {
 for $fn (@ARGV) {
     open(F, "$fn");
     $lastnil = 0;
+    $lastline = "";
     $incomment = 0;
     while (<F>) {
         ## Warn about windows-style newlines.
@@ -27,6 +28,11 @@ for $fn (@ARGV) {
         if ($C && /\s(?:if|while|for|switch)\(/) {
             print "      KW(:$fn:$.\n";
         }
+	## Warn about #else #if instead of #elif. 
+	if (($lastline =~ /^\# *else/) and ($_ =~ /^\# *if/)) {
+            print " #else#if:$fn:$.\n";
+	}
+	$lastline = $_;
         ## Warn about multiple empty lines.
         if ($lastnil && /^$/) {
             print " DoubleNL:$fn:$.\n";

src/common/compat.h

@@ -139,15 +139,13 @@ extern INLINE double U64_TO_DBL(uint64_t x) {
 #ifdef __GNUC__
 #define STMT_BEGIN (void) ({
 #define STMT_END })
-#else
-#if defined(sun) || defined(__sun__)
+#elif defined(sun) || defined(__sun__)
 #define STMT_BEGIN if (1) {
 #define STMT_END } else STMT_NIL
 #else
 #define STMT_BEGIN do {
 #define STMT_END } while (0)
 #endif
-#endif
 
 /* ===== String compatibility */
 #ifdef MS_WINDOWS

src/common/util.c

@@ -233,15 +233,13 @@ _tor_malloc_roundup(size_t *sizep DMALLOC_PARAMS)
 #ifdef HAVE_MALLOC_GOOD_SIZE
   *sizep = malloc_good_size(*sizep);
   return _tor_malloc(*sizep DMALLOC_FN_ARGS);
-#else
-#if defined(HAVE_MALLOC_USABLE_SIZE) && !defined(USE_DMALLOC)
+#elif defined(HAVE_MALLOC_USABLE_SIZE) && !defined(USE_DMALLOC)
   void *result = _tor_malloc(*sizep DMALLOC_FN_ARGS);
   *sizep = malloc_usable_size(result);
   return result;
 #else
   return _tor_malloc(*sizep DMALLOC_FN_ARGS);
 #endif
-#endif
 }
 
 /** Call the platform malloc info function, and dump the results to the log at

src/common/util.h

@@ -39,8 +39,7 @@
  * security-critical properties.
  */
 #error "Sorry; we don't support building with NDEBUG."
-#else
-#ifdef __GNUC__
+#elif defined(__GNUC__)
 /* Give an int-valued version of !x that won't confuse PREDICT_UNLIKELY. */
 #define IS_FALSE_AS_INT(x) ((x) == ((typeof(x)) 0))
 #else
@@ -57,7 +56,6 @@
               _SHORT_FILE_, __LINE__, __func__, #expr);                 \
       abort();                                                          \
     } STMT_END
-#endif
 
 #ifdef USE_DMALLOC
 #define DMALLOC_PARAMS , const char *file, const int line