Bug 158739 – linux-headers-2.6.19 breaks applications that uses u64 and the c99 standard

• Status: RESOLVED UPSTREAM
• Product: Gentoo Linux

[Description Roy Marples (RETIRED) 2006-12-21 07:41:53 UTC]

like dhcpcd

cc -D_BSD_SOURCE -O2 -pipe -pedantic -std=c99 -Wall -Wunused -Wimplicit -Wshadow -Wformat=2 -Wmissing-declarations -Wno-missing-prototypes -Wwrite-strings -Wbad-function-cast -Wnested-externs -Wcomment -Winline -Wchar-subscripts -Wcast-align -Wno-format-nonliteral -Wsequence-point -Wextra -Wdeclaration-after-statement -c interface.c
In file included from /usr/include/linux/rtnetlink.h:5,
                 from interface.c:33:
/usr/include/linux/if_link.h:43: error: expected specifier-qualifier-list before 

[Comment 1 Roy Marples (RETIRED) 2006-12-21 07:41:53 UTC]

like dhcpcd

cc -D_BSD_SOURCE -O2 -pipe -pedantic -std=c99 -Wall -Wunused -Wimplicit -Wshadow -Wformat=2 -Wmissing-declarations -Wno-missing-prototypes -Wwrite-strings -Wbad-function-cast -Wnested-externs -Wcomment -Winline -Wchar-subscripts -Wcast-align -Wno-format-nonliteral -Wsequence-point -Wextra -Wdeclaration-after-statement -c interface.c
In file included from /usr/include/linux/rtnetlink.h:5,
                 from interface.c:33:
/usr/include/linux/if_link.h:43: error: expected specifier-qualifier-list before __u64
In file included from /usr/include/linux/rtnetlink.h:7,
                 from interface.c:33:
/usr/include/linux/neighbour.h:92: error: expected specifier-qualifier-list before __u64
make: *** [interface.o] Error 1

This error is generated because asm/types.h does not define __u64 if __STRICT_ANSI__ is defined by the std=c99 flag. Removal of this flag means we compile ok.

This error is new to 2.6.19

[Comment 2 Roy Marples (RETIRED) 2006-12-21 08:01:55 UTC]

Created attachment 104517 [details, diff]
Fix u64 when using c99

u64 is defined by ISO C99, so this patch checks against the right define making dhcpcd work.

[Comment 3 Roy Marples (RETIRED) 2006-12-21 08:20:42 UTC]

I'm a nice guy - filed upstream
http://bugzilla.kernel.org/show_bug.cgi?id=7724

[Comment 4 SpanKY 2006-12-21 08:52:21 UTC]

yeah that's wrong ... the purpose was to make sure u64 never makes it while strict ansi is defined

i think your trouble lies with the fact that -std=c99 turns on strict ansi while -std=gnu99 does not

vapier@G5[ppc] 0 ~ $ echo "" | cpp -dD | grep -i ansi
vapier@G5[ppc] 0 ~ $ echo "" | cpp -dD -std=c99 | grep -i ansi
#define __STRICT_ANSI__ 1
vapier@G5[ppc] 0 ~ $ echo "" | cpp -dD -std=gnu99 | grep -i ansi
vapier@G5[ppc] 0 ~ $

[Comment 5 SpanKY 2006-12-21 08:52:58 UTC]

we'll just take this to the upstream URL