Add debug prints to inspect TC_JSONGenerate#test_gc's timeout issue.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35336 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/ext/json/fbuffer/fbuffer.h b/ext/json/fbuffer/fbuffer.h
index 3ff928856d..47e0c07004 100644
--- a/ext/json/fbuffer/fbuffer.h
+++ b/ext/json/fbuffer/fbuffer.h
@@ -68,6 +68,7 @@ static void fbuffer_inc_capa(FBuffer *fb, unsigned long requested)
     if (!fb->ptr) {
         fb->ptr = ALLOC_N(char, fb->initial_length);
         fb->capa = fb->initial_length;
+        fb->len = 0;
     }
 
     for (required = fb->capa; requested > required - fb->len; required <<= 1);