Does not compile with C99 about crap HOT 5 CLOSED

Changing the Makefile to "--std=c99" instead of "--std=c11" works for me. Could you send the exact error you get with c99?

from crap.

OK, I set --std=c99 and did a build. My results:

$ gcc --version
gcc (Ubuntu 4.3.3-5ubuntu4) 4.3.3
Copyright (C) 2008 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ make
gcc -O2 --std=c99 -Wall -Wextra -Werror -D_GNU_SOURCE -g3 -MMD -MP -MF.deps/branch.o.d -c -o branch.o -c branch.c
cc1: warnings being treated as errors
In file included from branch.c:19:
file.h:64: error: declaration does not declare anything
make: *** [branch.o] Error 1

(Oddly, this is a different error than I got before, without the c99
option.)

When I brought down the master branch from git and tried a build, I got
this:

$ make
gcc -O2 -Wall -Wextra -Werror -D_GNU_SOURCE -g3 -MMD -MP -MF.deps/branch.o.d -c -o branch.o -c branch.c
branch.c: In function 'break_cycle':
branch.c:106: error: conflicting types for 'i'
branch.c:83: error: previous definition of 'i' was here
branch.c:106: error: 'for' loop initial declaration used outside C99 mode
branch.c: In function 'tag_released':
branch.c:123: error: 'for' loop initial declaration used outside C99 mode
branch.c:127: error: conflicting types for 'i'
branch.c:123: error: previous definition of 'i' was here
branch.c:127: error: 'for' loop initial declaration used outside C99 mode
branch.c: In function 'branch_graph':
branch.c:158: error: 'for' loop initial declaration used outside C99 mode
branch.c:160: error: 'for' loop initial declaration used outside C99 mode
branch.c:173: error: redefinition of 'i'
branch.c:158: error: previous definition of 'i' was here
...

This is basically related to declaring a variable inside a for() loop,
which is a new-ish thing in C.

Anyway, my use case is pretty simple, and cvs-fast-export did the trick
for me just fine, and I'm running a pretty old OS on my server (Ubuntu
9), and I'm probably the only person seeing these problems, so if you
want to just close this issue, I'm fine with it.

-Ed Falk

On 4/16/16 6:44 PM, rcls wrote:

Changing the Makefile to "--std=c99" instead of "--std=c11" works for
me. Could you send the exact error you get with c99?

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#14 (comment)

from crap.

Ok, the error from file.h is due to using an anonymous union. Which appears to be a c11 construct allowed by some versions of gcc in c99 but not your version.

Just removing the "union { ... }" around those two struct members in file.h would probably fix it.

Incidently, the default for your gcc is probably not c99, one that old will be defaulting to c89/c90. I don't intend to support c89/c90, I'm not as masochistic as the kernel folks :-)

from crap.

Meh; don't worry about it.

Me, I'm kind of old-school. I was doing some maintenance on the app I
use to sort my email, and realized that about half of the code in it was
K&R C.

-ed falk

On 4/19/16 10:46 AM, rcls wrote:

Ok, the error from file.h is due to using an anonymous union. Which
appears to be a c11 construct allowed by some versions of gcc in c99 but
not your version.

Just removing the "union { ... }" around those two struct members in
file.h would probably fix it.

Incidently, the default for your gcc is probably not c99, one that old
will be defaulting to c89/c90. I don't intend to support c89/c90, I'm
not as masochistic as the kernel folks :-)

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#14 (comment)

from crap.

I have updated various comments on exactly what compiler flags to use (-std=gnu99 -fms-extensions should work with gcc back to 3.0 or so).

from crap.