Hi, In execution_monitor.ipp, these macros protect the inclusion of stdarg.h on the Sun. #if defined(__SUNPRO_CC) && defined(__SunOS) On our system: sass8000(217 ^H)% uname -a SunOS sass8000 5.10 Generic_118833-36 sun4u sparc SUNW,Sun-Fire The macro __SUNPRO_CC is defined but __SunOS is not defined. Here's the set of macros defined by the sun-5.7 compiler: " -D__SunOS_5_10 -D__SUNPRO_CC=0x570 -Dunix -Dsun -Dsparc -D__sparc - D__sparcv8plus -D__unix -D__sun -D__BUILTIN_VA_ARG_INCR -D__SVR4 - D__SUNPRO_CC_COMPAT=5 -D__SUN_PREFETCH I'd like to change the test in execution_monitor.ipp to permit either macro to include the necessary headers, like this: #if defined(__SUNPRO_CC) || defined(__SunOS) The patch is attached, okay to commit this? -- Noel Belcourt