Date: Fri, 1 Jun 2018 21:32:54 -0700 (PDT) From: "Rodney W. Grimes" <freebsd@pdx.rh.CN85.dnsmgr.net> To: Eitan Adler <eadler@freebsd.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r334518 - head/usr.bin/top Message-ID: <201806020432.w524WsNK084940@pdx.rh.CN85.dnsmgr.net> In-Reply-To: <201806020408.w5248r8u068839@repo.freebsd.org>
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> Author: eadler > Date: Sat Jun 2 04:08:52 2018 > New Revision: 334518 > URL: https://svnweb.freebsd.org/changeset/base/334518 > > Log: > top(1): help scan-build along a bit > > Teach scan-build that some arrays are larger than zero, and thus not to > warn. > > Modified: > head/usr.bin/top/display.c > head/usr.bin/top/machine.c > > Modified: head/usr.bin/top/display.c > ============================================================================== > --- head/usr.bin/top/display.c Sat Jun 2 03:54:50 2018 (r334517) > +++ head/usr.bin/top/display.c Sat Jun 2 04:08:52 2018 (r334518) > @@ -30,6 +30,7 @@ > > #include <sys/time.h> > > +#include <assert.h> > #include <curses.h> > #include <ctype.h> > #include <stdarg.h> > @@ -203,19 +204,23 @@ int display_init(struct statics * statics) > /* save pointers and allocate space for names */ > procstate_names = statics->procstate_names; > num_procstates = string_count(procstate_names); > + assert(num_procstates > 0); > lprocstates = malloc(num_procstates * sizeof(int)); > > cpustate_names = statics->cpustate_names; > > swap_names = statics->swap_names; > num_swap = string_count(swap_names); > + assert(num_swap > 0); Isn't it valid to run without swap and then num_swap = 0? > lswap = malloc(num_swap * sizeof(int)); > num_cpustates = string_count(cpustate_names); > + assert(num_cpustates > 0); > lcpustates = malloc(num_cpustates * sizeof(int) * statics->ncpus); > cpustate_columns = malloc(num_cpustates * sizeof(int)); > > memory_names = statics->memory_names; > num_memory = string_count(memory_names); > + assert(num_memory > 0); > lmemory = malloc(num_memory * sizeof(int)); > > arc_names = statics->arc_names; > > Modified: head/usr.bin/top/machine.c > ============================================================================== > --- head/usr.bin/top/machine.c Sat Jun 2 03:54:50 2018 (r334517) > +++ head/usr.bin/top/machine.c Sat Jun 2 04:08:52 2018 (r334518) > @@ -401,6 +401,7 @@ machine_init(struct statics *statics) > } > } > size = sizeof(long) * ncpus * CPUSTATES; > + assert(size > 0); > pcpu_cp_old = calloc(1, size); > pcpu_cp_diff = calloc(1, size); > pcpu_cpu_states = calloc(1, size); > > -- Rod Grimes rgrimes@freebsd.org
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