[Rd] Segmentation fault using "survival" package (PR#2320)

maechler@stat.math.ethz.ch maechler@stat.math.ethz.ch
Mon, 25 Nov 2002 09:20:49 +0100 (MET)

>>>>> "Jerome" == Jerome Asselin <jerome@hivnet.ubc.ca>
>>>>>     on Sat, 23 Nov 2002 00:51:51 +0100 (MET) writes:

    Jerome> Full_Name: Jerome Asselin Version: 1.6.1 OS: RedHat
    Jerome> Linux 7.2 Submission from: (NULL) (

    Jerome> Hello,

    Jerome> I get a segmentation fault when I run the following
    Jerome> code. I wouldn't expect meaningful results because
    Jerome> my response variable contains only missing values.
    Jerome> However, I would expect something like a regular
    Jerome> error (not a segmentation fault).

I confirm the problem (OS: a version of Redhat Linux, 1.6.1 patched)
running in "R -d gdb"
shows the place :

> coxph(surv ~ x, data=data)

Program received signal SIGSEGV, Segmentation fault.
0x4027dee4 in coxfit2 (maxiter=0x8c9cc60, nusedx=0x8c9cc40, nvarx=0x8c9cc20, 
    time=0x0, status=0x0, covar2=0x0, offset=0x0, weights=0x0, strata=0x0, 
    means=0x8c85738, Rf_beta=0x8c85710, u=0x8c856e8, imat2=0x8c856c0, 
    loglik=0x8cb3dd0, flag=0x8c9cc00, work=0x8b4ef10, eps=0x8c85698, 
    tol_chol=0x8c85670, sctest=0x8c85648) at coxfit2.c:116
116	coxfit2.c: No such file or directory.
	in coxfit2.c