ImageNativeSubstrate.cpp uses "delete" operator instead of "delete []" when it allocates an array with "new" operator:

http://hg.openjdk.java.net/jdk9/dev/jdk/file/20d991bc9171/src/java.base/share/native/libjimage/ImageNativeSubstrate.cpp#l213

...
    char* path = new char[size + 1];
    if (path == NULL) {
        return NULL;
    }
    memcpy(path, rawBytes, size);
    path[size] = '\0';
    // Locate resource location data.
    ImageLocation location;
    bool found = reader->find_location(path, location);
    delete path;
...

As far as I know, behavior is undefined in this case. It would be better to use delete[]:

diff -r 20d991bc9171 src/java.base/share/native/libjimage/ImageNativeSubstrate.cpp
--- a/src/java.base/share/native/libjimage/ImageNativeSubstrate.cpp Mon Dec 28 00:02:06 2015 +0000
+++ b/src/java.base/share/native/libjimage/ImageNativeSubstrate.cpp Mon Dec 28 19:02:19 2015 -0800
@@ -210,7 +210,7 @@
     // Locate resource location data.
     ImageLocation location;
     bool found = reader->find_location(path, location);
- delete path;
+ delete[] path;
     // Resource not found.
     if (!found) return NULL;
     // Expand stream into array.

See also similar JDK-8140649.