HelenOS sources

PrintfQualifierInt  100 boot/generic/src/printf_core.c 	PrintfQualifierInt,
PrintfQualifierInt  120 common/printf/printf_core.c 	PrintfQualifierInt,
PrintfQualifierInt  120 kernel/generic/common/printf/printf_core.c 	PrintfQualifierInt,
PrintfQualifierInt  120 uspace/lib/c/common/printf/printf_core.c 	PrintfQualifierInt,

HelenOS homepage, sources at GitHub