zz note: assembler bug on OS X

With about 8000 local symbols, the compiler is triggering a problem with the assembler that ships with Xcode. Luckily, the sources are available here: http://www.opensource.apple.com/tarballs/cctools/ For some reason this function is iterating repeatedly through ~175,000 entries.

The GNU tools I'm sure are deprecated at Apple, so a better approach is to just use clang.

--- cctools-800/as/i386.orig.c	1969-12-31 16:00:00.000000000 -0800
+++ cctools-800/as/i386.c	2011-05-24 14:35:22.000000000 -0700
@@ -6093,6 +6093,7 @@
 x86_64_resolve_local_symbol(symbolS *sym)
 {
 	symbolS *prev_symbol;
+	symbolS *answer;
 
 	if(sym->sy_has_been_resolved)
 	    return(sym->sy_prev_resolved);
@@ -6113,9 +6114,29 @@
 			}
 		}
 	}
-	sym->sy_prev_resolved = prev_symbol;
+	answer = prev_symbol;
+	sym->sy_prev_resolved = answer;
 	sym->sy_has_been_resolved =1;
-	return prev_symbol;
+	
+	/* loop through again, pointing *all* locals at the resolved symbol. */
+	for (prev_symbol = sym->sy_prev_by_index; prev_symbol != NULL; prev_symbol = prev_symbol->sy_prev_by_index)
+	{
+		if ((prev_symbol->sy_type & N_SECT) == N_SECT &&
+			(prev_symbol->sy_type & N_STAB) == 0 &&
+			prev_symbol->sy_other == sym->sy_other)
+		{
+			if (!is_local_symbol(prev_symbol))
+			{
+				/* Found our non-local symbol. */
+				break;
+			} else {
+			  prev_symbol->sy_prev_resolved = answer;
+			  prev_symbol->sy_has_been_resolved = 1;
+			}
+		}
+	}
+
+	return answer;
 }
 
 int32_t

After compiling, backup and replace thus: $ cp ax86_64_dir/as /usr/libexec/gcc/darwin/x86_64/as