8000 config.c:155:53: error: passing argument 1 of ‘RB_INT2FIX’ makes integer from pointer · Issue #27 · domcleal/rkerberos · GitHub
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config.c:155:53: error: passing argument 1 of ‘RB_INT2FIX’ makes integer from pointer #27

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ekohl opened this issue Feb 18, 2025 · 1 comment
Open

config.c:155:53: error: passing argument 1 of ‘RB_INT2FIX’ makes integer from pointer #27

ekohl opened this issue Feb 18, 2025 · 1 comment

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@ekohl
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ekohl commented Feb 18, 2025 •
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When installing on Fedora 41 (and could replicate on EL10) I get the following in gem_make.out:

current directory: /home/ekohl/.gem/ruby/gems/rkerberos-0.1.5/ext/rkerberos
/usr/bin/ruby -I/usr/share/rubygems extconf.rb
checking for krb5.h... yes
checking for -lkrb5... yes
checking for pkg-config for com_err... ["-I/usr/include/et ", "", "-lcom_err"]
checking for kadm5/admin.h... yes
checking for -lkadm5clnt... yes
checking for kdb.h... yes
checking for -llibkdb5... no
creating Makefile

current directory: /home/ekohl/.gem/ruby/gems/rkerberos-0.1.5/ext/rkerberos
make DESTDIR\= sitearchdir\=./.gem.20250218-305276-gt98yl sitelibdir\=./.gem.20250218-305276-gt98yl clean
rm -f 
rm -fr rkerberos.so false ccache.o config.o context.o kadm5.o keytab.o keytab_entry.o policy.o principal.o rkerberos.o *.bak mkmf.log .*.time

current directory: /home/ekohl/.gem/ruby/gems/rkerberos-0.1.5/ext/rkerberos
make DESTDIR\= sitearchdir\=./.gem.20250218-305276-gt98yl sitelibdir\=./.gem.20250218-305276-gt98yl
gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -I/usr/include/et -DHAVE_KRB5_H -DHAVE_KADM5_ADMIN_H -DHAVE_KDB_H -I/usr/local/include    -fPIC -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -march=x86-64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -mtls-dialect=gnu2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fPIC  -std=c99 -Wall -pedantic -m64 -o ccache.o -c ccache.c
gcc -I. -I/usr/include -I/usr/include/ruby/backward -I/usr/include -I. -I/usr/include/et -DHAVE_KRB5_H -DHAVE_KADM5_ADMIN_H -DHAVE_KDB_H -I/usr/local/include    -fPIC -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -march=x86-64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -mtls-dialect=gnu2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fPIC  -std=c99 -Wall -pedantic -m64 -o config.o -c config.c
In file included from /usr/include/ruby/internal/arithmetic/int.h:26,
                 from /usr/include/ruby/internal/arithmetic/char.h:23,
                 from /usr/include/ruby/internal/arithmetic.h:24,
                 from /usr/include/ruby/ruby.h:28,
                 from /usr/include/ruby.h:38,
                 from ./rkerberos.h:4,
                 from config.c:1:
config.c: In function ‘rkadm5_config_initialize’:
config.c:155:53: error: passing argument 1 of ‘RB_INT2FIX’ makes integer from pointer without a cast [-Wint-conversion]
  155 |     rb_iv_set(self, "@keysalts", INT2FIX(ptr->config.keysalts));
      |                                          ~~~~~~~~~~~^~~~~~~~~
      |                                                     |
      |                                                     krb5_key_salt_tuple *
/usr/include/ruby/internal/arithmetic/long.h:111:17: note: expected ‘long int’ but argument is of type ‘krb5_key_salt_tuple *’
  111 | RB_INT2FIX(long i)
      |            ~~~~~^
make: *** [Makefile:249: config.o] Error 1

make failed, exit code 2

That's this bit of code:

rkerberos/ext/rkerberos/config.c

Lines 153 to 157 in d550a15

// Not very useful at the moment. How do you iterate over an enum in C?
if(ptr->config.keysalts)
rb_iv_set(self, "@keysalts", INT2FIX(ptr->config.keysalts));
else
rb_iv_set(self, "@keysalts", Qnil);

I suppose the TODO finally caught up and came back to bite.
@ekohl ekohl mentioned this issue Feb 18, 2025
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@djberg96
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Looks like that parameter is a krb5_key_salt_tuple as defined at https://github.com/krb5/krb5/blob/master/src/include/kdb.h#L239-L242. So, it will require a mapped struct (Ruby object), and a loop.

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