After r170428, offline assembler sometimes creates empty LLIntAssembly.h

• Component: JavaScriptCore
• Status: RESOLVED INVALID

[Michael Saboff]

After r170428, the offline assembler will sometimes create an LLIntAssembly.h file with just the hash line:
// offlineasm input hash: cb3be4a5c6bc8076a46396599fba7c070d00cdf8 1fdc12e5c4851899db57a32e840ba77f46a9fa29 283b8172f1ff6e5e115dbe22d5c7494f289ea2da

This is just a guess, but could it be caused by an exception being thrown,
caused by for example the change in asm.rb?


--- Source/JavaScriptCore/offlineasm/asm.rb	(revision 170426)
+++ Source/JavaScriptCore/offlineasm/asm.rb	(working copy)
@@ -262,7 +262,7 @@ class Assembler
             @codeOrigin = nil
             @commentState = :many
         when :many
-            @outp.puts "// #{text}" if $enableCodeOriginComments
+            @outp.puts $commentPrefix + " #{text}" if $enableCodeOriginComments
         else
             raise
         end

[Michael Saboff]

I can no longer get this to fail.  When I filed, I performed the following steps:

svn up -r 170424
Tools/Scripts/build-webkit --debug
svn up -r 170431
Tools/Scripts/build-webkit --debug

The second build failed.

Today, those steps work fine.  I tried multiple times, but can't reproduce.

We can file another bug if the problem reappears.