Re: poudriere-devel-3.3.99.20211015 fails to build in my aarch64&armv7 environments (built on amd64 just fine)

From: Mark Millard via freebsd-toolchain <freebsd-toolchain_at_freebsd.org>
Date: Sun, 17 Oct 2021 22:06:28 UTC
On 2021-Oct-17, at 11:19, Mark Millard <marklmi@yahoo.com> wrote:

> On 2021-Oct-16, at 23:41, Mark Millard <marklmi at yahoo.com> wrote:
> 
> On 2021-Oct-16, at 19:20, Mark Millard via freebsd-toolchain <freebsd-toolchain@freebsd.org> wrote:
>> 
>> 
>>> [00:00:45] [06] [00:00:18] Saving ports-mgmt/poudriere-devel | poudriere-devel-3.3.99.20211015 wrkdir
>>> [00:00:49] [06] [00:00:22] Saved ports-mgmt/poudriere-devel | poudriere-devel-3.3.99.20211015 wrkdir to: /usr/local/poudriere/data/wrkdirs/13_0R-CA72-default/default/poudriere-devel-3.3.99.20211015.tbz
>>> 
>>> Log:
>>> 
>>> . . .
>>> --- src/libexec/poudriere/pwait/sh-pwait.o ---
>>> cc -DHAVE_CONFIG_H -I. -I./src   -mcpu=cortex-a72 -Wall -pipe -O2   -Wno-extra -DSHELL -std=gnu99 -DVTABSIZE=1000  -DNO_HISTORY -Wno-unused-const-variable -include  ./external/sh_compat/compat.h -I./s
>>> rc  -I./external/sh -I./src/poudriere-sh  -I./src/poudriere-sh -O2 -pipe -mcpu=cortex-a72  -g -fstack-protector-strong -fno-strict-aliasing -MT src/libexec/poudriere/pwait/sh-pwait.o -MD -MP -MF src/l
>>> ibexec/poudriere/pwait/.deps/sh-pwait.Tpo -c -o src/libexec/poudriere/pwait/sh-pwait.o `test -f 'src/libexec/poudriere/pwait/pwait.c' || echo './'`src/libexec/poudriere/pwait/pwait.c
>>> . . .
>>> --- src/libexec/poudriere/pwait/sh-pwait.o ---
>>> src/libexec/poudriere/pwait/pwait.c:62:2: error: passing 'void *' to parameter of incompatible type 'va_list' (aka '__builtin_va_list')
>>>      exit(EX_USAGE);
>>>      ^~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:106:20: note: expanded from macro 'exit'
>>> #define exit(...)               exit_(_, ##__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:107:21: note: expanded from macro 'exit_'
>>> #define exit_(...)              exit_X(__VA_ARGS__, _1, _0)(__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:108:32: note: expanded from macro 'exit_X'
>>> #define exit_X(_0, _1, X, ...)  exit ## X
>>>                              ^
>>> <scratch space>:40:1: note: expanded from here
>>> exit_1
>>> ^
>>> ./src/poudriere-sh/helpers.h:110:58: note: expanded from macro 'exit_1'
>>> #define exit_1(_, status)       verrorwithstatus(status, NULL, NULL)
>>>                                                             ^~~~
>>> /usr/include/sys/_null.h:34:14: note: expanded from macro 'NULL'
>>> #define NULL    ((void *)0)
>>>              ^~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:104:49: note: passing argument to parameter here
>>> void verrorwithstatus(int, const char *, va_list) __printf0like(2, 0) __dead2;
>>>                                              ^
>>> src/libexec/poudriere/pwait/pwait.c:205:5: error: passing 'void *' to parameter of incompatible type 'va_list' (aka '__builtin_va_list')
>>>                              exit(EX_OK);
>>>                              ^~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:106:20: note: expanded from macro 'exit'
>>> #define exit(...)               exit_(_, ##__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:107:21: note: expanded from macro 'exit_'
>>> #define exit_(...)              exit_X(__VA_ARGS__, _1, _0)(__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:108:32: note: expanded from macro 'exit_X'
>>> #define exit_X(_0, _1, X, ...)  exit ## X
>>>                              ^
>>> <scratch space>:41:1: note: expanded from here
>>> exit_1
>>> ^
>>> ./src/poudriere-sh/helpers.h:110:58: note: expanded from macro 'exit_1'
>>> #define exit_1(_, status)       verrorwithstatus(status, NULL, NULL)
>>>                                                             ^~~~
>>> /usr/include/sys/_null.h:34:14: note: expanded from macro 'NULL'
>>> #define NULL    ((void *)0)
>>>              ^~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:104:49: note: passing argument to parameter here
>>> void verrorwithstatus(int, const char *, va_list) __printf0like(2, 0) __dead2;
>>>                                              ^
>>> src/libexec/poudriere/pwait/pwait.c:275:5: error: passing 'void *' to parameter of incompatible type 'va_list' (aka '__builtin_va_list')
>>>                              exit(124);
>>>                              ^~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:106:20: note: expanded from macro 'exit'
>>> #define exit(...)               exit_(_, ##__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:107:21: note: expanded from macro 'exit_'
>>> #define exit_(...)              exit_X(__VA_ARGS__, _1, _0)(__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:108:32: note: expanded from macro 'exit_X'
>>> #define exit_X(_0, _1, X, ...)  exit ## X
>>>                              ^
>>> <scratch space>:42:1: note: expanded from here
>>> exit_1
>>> ^
>>> ./src/poudriere-sh/helpers.h:110:58: note: expanded from macro 'exit_1'
>>> #define exit_1(_, status)       verrorwithstatus(status, NULL, NULL)
>>>                                                             ^~~~
>>> /usr/include/sys/_null.h:34:14: note: expanded from macro 'NULL'
>>> #define NULL    ((void *)0)
>>>              ^~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:104:49: note: passing argument to parameter here
>>> void verrorwithstatus(int, const char *, va_list) __printf0like(2, 0) __dead2;
>>>                                              ^
>>> src/libexec/poudriere/pwait/pwait.c:303:5: error: passing 'void *' to parameter of incompatible type 'va_list' (aka '__builtin_va_list')
>>>                              exit(EX_OK);
>>>                              ^~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:106:20: note: expanded from macro 'exit'
>>> #define exit(...)               exit_(_, ##__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:107:21: note: expanded from macro 'exit_'
>>> #define exit_(...)              exit_X(__VA_ARGS__, _1, _0)(__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:108:32: note: expanded from macro 'exit_X'
>>> #define exit_X(_0, _1, X, ...)  exit ## X
>>>                              ^
>>> <scratch space>:43:1: note: expanded from here
>>> exit_1
>>> ^
>>> ./src/poudriere-sh/helpers.h:110:58: note: expanded from macro 'exit_1'
>>> #define exit_1(_, status)       verrorwithstatus(status, NULL, NULL)
>>>                                                             ^~~~
>>> /usr/include/sys/_null.h:34:14: note: expanded from macro 'NULL'
>>> #define NULL    ((void *)0)
>>>              ^~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:104:49: note: passing argument to parameter here
>>> void verrorwithstatus(int, const char *, va_list) __printf0like(2, 0) __dead2;
>>>                                              ^
>>> src/libexec/poudriere/pwait/pwait.c:319:2: error: passing 'void *' to parameter of incompatible type 'va_list' (aka '__builtin_va_list')
>>>      exit(EX_OK);
>>>      ^~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:106:20: note: expanded from macro 'exit'
>>> #define exit(...)               exit_(_, ##__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:107:21: note: expanded from macro 'exit_'
>>> #define exit_(...)              exit_X(__VA_ARGS__, _1, _0)(__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:108:32: note: expanded from macro 'exit_X'
>>> #define exit_X(_0, _1, X, ...)  exit ## X
>>>                              ^
>>> <scratch space>:44:1: note: expanded from here
>>> exit_1
>>> ^
>>> ./src/poudriere-sh/helpers.h:110:58: note: expanded from macro 'exit_1'
>>> #define exit_1(_, status)       verrorwithstatus(status, NULL, NULL)
>>>                                                             ^~~~
>>> . . .
>>> 
>>> 
>>> --- src/poudriere-sh/sh-mkdir.o ---
>>> cc -DHAVE_CONFIG_H -I. -I./src   -mcpu=cortex-a72 -Wall -pipe -O2   -Wno-extra -DSHELL -std=gnu99 -DVTABSIZE=1000  -DNO_HISTORY -Wno-unused-const-variable -include  ./external/sh_compat/compat.h -I./src  -I./external/sh -I./src/poudriere-sh  -I./src/poudriere-sh -O2 -pipe -mcpu=cortex-a72  -g -fstack-protector-strong -fno-strict-aliasing -MT src/poudriere-sh/sh-mkdir.o -MD -MP -MF src/poudriere-sh/.deps/sh-mkdir.Tpo -c -o src/poudriere-sh/sh-mkdir.o `test -f 'src/poudriere-sh/mkdir.c' || echo './'`src/poudriere-sh/mkdir.c
>>> . . .
>>> --- src/poudriere-sh/sh-mkdir.o ---
>>> src/poudriere-sh/mkdir.c:139:2: error: passing 'void *' to parameter of incompatible type 'va_list' (aka '__builtin_va_list')
>>>      exit(exitval);
>>>      ^~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:106:20: note: expanded from macro 'exit'
>>> #define exit(...)               exit_(_, ##__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:107:21: note: expanded from macro 'exit_'
>>> #define exit_(...)              exit_X(__VA_ARGS__, _1, _0)(__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:108:32: note: expanded from macro 'exit_X'
>>> #define exit_X(_0, _1, X, ...)  exit ## X
>>>                              ^
>>> <scratch space>:46:1: note: expanded from here
>>> exit_1
>>> ^
>>> ./src/poudriere-sh/helpers.h:110:58: note: expanded from macro 'exit_1'
>>> #define exit_1(_, status)       verrorwithstatus(status, NULL, NULL)
>>>                                                             ^~~~
>>> /usr/include/sys/_null.h:34:14: note: expanded from macro 'NULL'
>>> #define NULL    ((void *)0)
>>>              ^~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:104:49: note: passing argument to parameter here
>>> void verrorwithstatus(int, const char *, va_list) __printf0like(2, 0) __dead2;
>>>                                              ^
>>> src/poudriere-sh/mkdir.c:226:2: error: passing 'void *' to parameter of incompatible type 'va_list' (aka '__builtin_va_list')
>>>      exit (EX_USAGE);
>>>      ^~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:106:20: note: expanded from macro 'exit'
>>> #define exit(...)               exit_(_, ##__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:107:21: note: expanded from macro 'exit_'
>>> #define exit_(...)              exit_X(__VA_ARGS__, _1, _0)(__VA_ARGS__)
>>>                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> ./src/poudriere-sh/helpers.h:108:32: note: expanded from macro 'exit_X'
>>> #define exit_X(_0, _1, X, ...)  exit ## X
>>>                              ^
>>> <scratch space>:47:1: note: expanded from here
>>> exit_1
>>> . . .
>>> 
>>> I'll not list the rest.
>> 
>> I'll note that https://developer.arm.com/documentation/ihi0055/d/ reports
>> that va_list is based on:
>> 
>> struct __va_list {
>> void *__stack;
>>  void *__gr_top;
>>  void *__vr_top;
>>  int   __gr_offs;
>>  int   __vr_offs;
>> }
>> 
>> so NULL is not type compatible for aarch64.
>> 
>> My guess is an empty va_list needs to be created and used
>> instead of NULL, following the normal va_list protocol. This
>> should avoid presumptions about aspects that the language
>> standard does not specify.
>> 
> 
> 
> My armv7 contexts fail similarly.
> 
> https://developer.arm.com/documentation/ihi0042/latest
> 
> indicates that the va_list typedef is for:
> 
> struct __va_list {void *__ap;}
> 
> So, again, NULL it not type compatible.
> 

[Bryan has seen a variation of this material via comments
on github.]

poudriere-devel was later updated to avoid the type compatibility.
But the update does not follow the va_list protocol in that it
does initialization of a va_list via ={} to supposedly form an
empty va_list. The ={} is not guaranteed by the language (C99+,
say) to assign the same va_list content as va_start would for an
empty match to a routine's ... in its parameter list.

It looks to be that va_start is the only langauge-definition
supported form of initialization of a va_list (and that va_end
is required to close out such an initialized va_list).

So the likes of:

git: 14e5e1370ddb - main - ports-mgmt/poudriere-devel: Update to 3.3.0-1020-g59a87677c Bryan Drewery
and:
git: 4116dc2f1f63 - main - ports-mgmt/poudriere-devel: Update to 3.3.0-1022-g964cf327f Bryan Drewery 

may not prove sufficient in general, although it may well "work"
for amd64 where NULL happened to be compatible with va_list
as far as types go. I do not claim a known operational failure
elsewhere, just going outside what the langauge guarantees for
source code to be guaranteed work for a correct language
implementation.


===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)