Still seeing this in today’s head of master: info_subscriber.c: In function 'opal_infosubscribe_change_info': ../../opal/util/info.h:112:31: warning: '%s' directive output may be truncated writing up to 36 bytes into a region of size 27 [-Wformat-truncation=] #define OPAL_INFO_SAVE_PREFIX "_OMPI_IN_" ^ info_subscriber.c:268:13: note: in expansion of macro 'OPAL_INFO_SAVE_PREFIX' OPAL_INFO_SAVE_PREFIX "%s", key); ^~~~~~~~~~~~~~~~~~~~~ info_subscriber.c:268:36: note: format string is defined here OPAL_INFO_SAVE_PREFIX "%s", key); ^~ In file included from /opt/local/lib/gcc7/gcc/x86_64-apple-darwin17/7.3.0/include-fixed/stdio.h:425:0, from ../../opal/class/opal_list.h:71, from ../../opal/util/info_subscriber.h:30, from info_subscriber.c:45: info_subscriber.c:267:9: note: '__builtin_snprintf' output between 10 and 46 bytes into a destination of size 36 snprintf(modkey, OPAL_MAX_INFO_KEY, ^ In file included from /opt/local/lib/gcc7/gcc/x86_64-apple-darwin17/7.3.0/include-fixed/stdio.h:425:0, from ../../opal/class/opal_list.h:71, from ../../opal/util/info.h:30, from info.c:46: info.c: In function 'opal_info_dup_mode.constprop': ../../opal/util/info.h:112:31: warning: '%s' directive output may be truncated writing up to 36 bytes into a region of size 28 [-Wformat-truncation=] #define OPAL_INFO_SAVE_PREFIX "_OMPI_IN_" ^ info.c:212:22: note: in expansion of macro 'OPAL_INFO_SAVE_PREFIX' OPAL_INFO_SAVE_PREFIX "%s", pkey); ^~~~~~~~~~~~~~~~~~~~~ info.c:212:45: note: format string is defined here OPAL_INFO_SAVE_PREFIX "%s", pkey); ^~ In file included from /opt/local/lib/gcc7/gcc/x86_64-apple-darwin17/7.3.0/include-fixed/stdio.h:425:0, from ../../opal/class/opal_list.h:71, from ../../opal/util/info.h:30, from info.c:46: info.c:211:18: note: '__builtin_snprintf' output between 10 and 46 bytes into a destination of size 37 snprintf(savedkey, OPAL_MAX_INFO_KEY+1, ^
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