Quoting Jonathan Nieder:
: Raphael Manfredi wrote:
:
: > The packaged <ucontext.h> file does a:
: >
: > #include <sys/ucontext.h>
: >
: > but that file is missing from the package, hence the <ucontext.h> header
: > cannot be included in programs.
:
: $ dpkg-query -S /usr/include/i386-linux-gnu/sys/ucontext.h
: libc6-dev: /usr/include/i386-linux-gnu/sys/ucontext.h
: $ dpkg-query -W libc6-dev
: libc6-dev 2.13-27
:
: What actual error message are you getting from your compiler, and with
: what command line?
I'm building a metaconfig test for ucontext.h, and I am currently attempting
to compile this simple stupid program to see whether <ucontext.h> is
usable and how to grab the PC from the context:
#include <ucontext.h>
main()
{
ucontext_t *u;
return u->uc_mcontext.gregs[REG_EIP];
}
When compiling with:
cc -o test test.c
I was getting:
error: 'REG_EIP' undeclared (first use in this function)
When I started to look at <ucontext.h> I saw an inclusion of <sys/ucontext.h>
and I forgot about the hidden gcc magic of looking for the file into
/usr/include/i386-linux-gnu.
Sorry, I should have done a
cc -E test.c
to understand my mistake.
Raphael
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