Hi guys, On Jul 14 22:07, Ken Brown wrote: > On 7/14/2015 6:03 PM, Eric Blake wrote: > >On 07/08/2015 01:39 PM, Warren Young wrote: > >>A search for "sigaltstack” on code.openhub.net found only 95 projects with > >>this string in their source code, almost entirely consisting of *receivers* > >>of that call, such as NetBSD, glibc, and a bunch of Linux forks. > > > >libsigsegv is a cygwin package (currently 32-bit only) that has > >configure checks to use sigaltstack if present; I have not yet tested if > >it can be configured to work with the new API, but hope to do so in the > >near future. In fact, if sigaltstack works, it may finally be possible > >to port libsigsegv to 64-bit cygwin (the reason the current package is > >not ported to 64-bit is that libsigsegv is relying on raw assembly and > >Windows native calls to emulate the lack of sigaltstack; but if > >sigaltstack works, then we don't need to port the 64-bit counterpart for > >the 32-bit specific hacks). > > I just did a quick test, and it looks promising. I removed all > Cygwin-specific code from configure.ac and Makefile.am (see attached patch), > and it then built on 64-bit Cygwin. Here's the result of 'make check': > > Entering directory > '/home/kbrown/src/cyglibsigsegv/libsigsegv-2.10-1.x86_64/build/tests' > Test passed. > PASS: sigsegv1.exe > Test passed. > PASS: sigsegv2.exe > Doing SIGSEGV pass 1. > Stack overflow 1 caught. > Doing SIGSEGV pass 2. > Stack overflow 2 caught. > Test passed. > PASS: sigsegv3.exe > SKIP: stackoverflow1.exe > SKIP: stackoverflow2.exe
Any idea why these two tests have been skipped? That means the HAVE_STACK_OVERFLOW_RECOVERY autoconf test failed. You removed cygwin from the explicit mingw* | cygwin*) sv_cv_have_stack_overflow_recovery=yes ;; which is the right thing to do, but that means CFG_LEAVE has been set to leave-none.c, apparently. I haven't much time to look into that right now, but will later today if you don't beat me to it. > ====================== > All 3 tests passed > (2 tests were not run) > ====================== > [...] > Please send the following summary line via email to the main author > Bruno Haible <br...@clisp.org> for inclusion into the list of > successfully tested platforms (see PORTING file). > > libsigsegv: x86_64-unknown-cygwin | yes | no | 2.10 > > >I'm not the cygwin packager for libsigsegv, > > No one is; it's orphaned. > > >but am one of the upstream > >contributors, and so this thread has piqued my interest. > > So it seems that you would be the obvious person to maintain it, if you have > the time. If you don't have the time, I'd be willing to ITA it just to get > it into the 64-bit distro. But in that case I'd appreciate it if you would > review my build after I send the ITA, since you actually know something > about libsigsegv, and I don't. Thanks a lot, this is most helpful. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Maintainer cygwin AT cygwin DOT com Red Hat
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