David Holmes came up with the accurate report:

In make/test/JtregNativeHotspot.gmk we have this ever expanding list:

ifeq ($(TOOLCHAIN_TYPE), solstudio)
    BUILD_HOTSPOT_JTREG_LIBRARIES_LIBS_liboverflow := -lc BUILD_HOTSPOT_JTREG_LIBRARIES_LIBS_libSimpleClassFileLoadHook := -lc BUILD_HOTSPOT_JTREG_LIBRARIES_LIBS_libGetOwnedMonitorInfoTest := -lc
...
    

Why do we need to do this instead of always linking in the basic libraries?