https://github.com/ImageMagick/ImageMagick/issues/799

diff --git a/MagickCore/segment.c b/MagickCore/segment.c
index e47d0cd4ba49a8cf7280f0f25e884dfeeb5741c5..83b0c563978c4b8ae49eeea966979183930b0056 100644 (file)
--- a/MagickCore/segment.c
+++ b/MagickCore/segment.c
@@ -1391,13 +1391,13 @@ static IntervalTree *InitializeIntervalTree(const ZeroCrossing *zero_crossing,
           {
             if (node == head)
               {
-                node->child=(IntervalTree *) AcquireMagickMemory(
+                node->child=(IntervalTree *) AcquireCriticalMemory(
                   sizeof(*node->child));
                 node=node->child;
               }
             else
               {
-                node->sibling=(IntervalTree *) AcquireMagickMemory(
+                node->sibling=(IntervalTree *) AcquireCriticalMemory(
                   sizeof(*node->sibling));
                 node=node->sibling;
               }