When using the GCC static analyzer (-fanalyzer) the following issue is reported :
src/java.desktop/share/native/common/java2d/opengl/OGLContext.c:487:9: warning: use of possibly-NULL '*oglc.xformMatrix' where non-null expected [CWE-690] [-Wanalyzer-possible-null-argument]

Seems we miss a NULL check of the return value of malloc (at most other places in the coding we do it).