dgreen@monet.watson.ibm.com (Dan Greening) (03/03/90)
mark@comp.vuw.ac.nz (Mark Davies) writes in comp.windows.x: > Has anyone build R4 under HP-UX 7.0 on a series 300 machine? > > Everything built and worked fine under 6.5. > Under 7.0 everything builds without complaint (except for warnings because > SIGCHLD is now defined in signal.h), the server works, some of the clients > work, but other clients (notably xterm, xman, xcalc, xdm) fail immediately > with the message: > > Cannot perform realloc > > (from lib/Xt/Alloc.c) > There should be plenty of swap space (the 6.5 built clients work in the > same circumstances). > > The only thing I changed (apart from the operating system :-) was in > config/hp.cf change the OSName etc to: > #define OSName HP-UX 7.0 > #define OSMajorVersion 7 > #define OSMinorVersion 0 > > Any ideas what is going on? > > cheers > mark This is exactly the problem I had. A similar problem was reported to me by a colleague at Washington State University. I posted a request for help to comp.sys.hp about three weeks ago. I received this response from Kris Olander, who runs on a 9000/340: > I've compiled X11R4 (with patched through fix-2) with very few > difficulties. I wasn't able to startup X fresh from compiling until > I made /usr/bin/X a soft link to /usr/bin/Xhp, chmod 2755 on Xhp,xterm, > and xload, and finally, chgrp sys Xhp,xterm,xload. It was the only helpful response I've received. HP techs told me "gosh, I thought everything worked in HP 7.0 :-)" and that was about it. I have not been able to test this solution, since I am now physically distant from the HP machines I help administer. IF THE ABOVE METHOD SOLVES THE "Cannot perform realloc" PROBLEM, COULD SOMEONE PLEASE LET ME KNOW BY E-MAIL? Thanks. Dan R. Greening 12 Foster Court NY (914) 789-7860 dgreen@cs.ucla.edu Croton-on-Hudson, NY 10520 CA (213) 825-2266
mark@comp.vuw.ac.nz (Mark Davies) (03/04/90)
I write about X clients failing under HP-UX 7.0 with: Cannot perform realloc In article <1990Mar2.185840.24495@arnor.uucp> dgreen@cs.ucla.edu writes: >This is exactly the problem I had. A similar problem was reported to me >by a colleague at Washington State University. I posted a request for >help to comp.sys.hp about three weeks ago. I received this response from >Kris Olander, who runs on a 9000/340: >> I've compiled X11R4 (with patched through fix-2) with very few >> difficulties. I wasn't able to startup X fresh from compiling until >> I made /usr/bin/X a soft link to /usr/bin/Xhp, chmod 2755 on Xhp,xterm, >> and xload, and finally, chgrp sys Xhp,xterm,xload. >IF THE ABOVE METHOD SOLVES THE "Cannot perform realloc" PROBLEM, COULD >SOMEONE PLEASE LET ME KNOW BY E-MAIL? Thanks. No it doesn't. The correct fix came from Bob May <bobm@hpcvlx.cv.hp.com> in article <100920183@hpcvlx.cv.hp.com> in comp.windows.x. Seems under 7.0 you need to define MALLOC_0_RETURNS_NULL. I did this and everything now works smoothly. cheers mark
andreas@hpcvlx.cv.hp.com (Jim Andreas) (03/18/90)
Regarding the:
cannot perform realloc
problem in clients in MIT X11R4:
Yes the True Answer is to define MALLOC_0_RETURNS_NULL
when you compile your libs. Here is the relevant code
fragment from Xlibos.h in MIT X11R4 (./mit/lib/X/Xlibos.h):
/*
* Note that some machines do not return a valid pointer for malloc(0), in
* which case we provide an alternate under the control of the
* define MALLOC_0_RETURNS_NULL. This is necessary because some
* Xlib code expects malloc(0) to return a valid pointer to storage.
*/
#ifdef MALLOC_0_RETURNS_NULL
# define Xmalloc(size) malloc(((size) > 0 ? (size) : 1))
# define Xrealloc(ptr, size) realloc((ptr), ((size) > 0 ? (size) : 1))
# define Xcalloc(nelem, elsize) calloc(((nelem) > 0 ? (nelem) : 1), (elsize))
#else
# define Xmalloc(size) malloc((size))
# define Xrealloc(ptr, size) realloc((ptr), (size))
# define Xcalloc(nelem, elsize) calloc((nelem), (elsize))
#endif
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