Comments (12)
Is there a reason size_t is being redefined?
from zip.
Thanks @russkel - I'll take a look.
It was added in commit: 635ef1d
for 64-bit Windows:
// 64-bit Windows is the only mainstream platform
// where sizeof(long) != sizeof(void*)
It's not a problem with size_t
but with redefined ssize_t
If we have ssize_t
one of
_SSIZE_T_DEFINED
_SSIZE_T_DEFINED_
_SSIZE_T
_SSIZE_T_
__ssize_t_defined
should be defined. I'll take a look what GCC 9.X.
defines.
BTW. Alpine uses musl
instead of libc
, so I'll have to take a look into this particular distro.
from zip.
Looks adding __DEFINED_ssize_t
(which is what musl has) to https://github.com/kuba--/zip/blob/master/src/zip.h#L22 may solve the problem but I'll have to double check it.
from zip.
@russkel - I was able to compile this library on Alpine with gcc 9.2.0, without any problems.
Anyway, just in case I pushed PR: https://github.com/kuba--/zip/pull/111/files
which IMO should fix the potential issue. It just checks/defines another __DEFINED_ssize_t
which is used by gcc on Alpine.
PTAL if it works for you
from zip.
@russkel Please feel free to reopen, if the issue still happens.
I'm gonna release a new version with the fix
from zip.
hi @kuba-- thanks for this. I haven't had a chance to test it yet but I will later this evening and will report back! Thanks again for quick fix.
from zip.
@kuba-- 👍 compiling fine. Thanks for the fix.
from zip.
Hi,
i try to compile latest ASSIMP (which uses zip) on FreeBSD 12.1 32Bit with GCC 9.2.0 and there still is an error regarding typedef redefinition:
[ 65%] Building C object code/CMakeFiles/assimp.dir/__/contrib/zip/src/zip.c.o
In file included from /home/foo/development/libs/assimp/contrib/zip/src/zip.c:39:
/home/foo/development/libs/assimp/contrib/zip/src/zip.h:31:14: error: typedef redefinition with different types ('long' vs '__ssize_t' (aka 'int'))
typedef long ssize_t; /* byte count or error */
^
/usr/include/sys/types.h:206:19: note: previous definition is here
typedef __ssize_t ssize_t;
^
1 error generated.
*** Error code 1
I see that @kimkulling added your fix to the master branch last year, but this doesn't seem to work on FreeBSD. What should i do?
from zip.
@randomMesh - I'll take a look on define
pre-proc. in freebsd library and update zip.c
.
But if you have a easy access to FreeBSD, you can check /usr/include/sys/types.h
file and try to fix by adding ifdef
from zip.
Hi,
thanks for the quick answer. I made it compile.
I had a look at /usr/include/sys/types.h
which looks like this:
#ifndef _SSIZE_T_DECLARED
typedef __ssize_t ssize_t;
#define _SSIZE_T_DECLARED
#endif
So i added this to zip.h:
diff --git a/contrib/zip/src/zip.h b/contrib/zip/src/zip.h
index a48d64d6..d85306c8 100644
--- a/contrib/zip/src/zip.h
+++ b/contrib/zip/src/zip.h
@@ -21,7 +21,7 @@ extern "C" {
#if !defined(_SSIZE_T_DEFINED) && !defined(_SSIZE_T_DEFINED_) && \
!defined(__DEFINED_ssize_t) && !defined(__ssize_t_defined) && \
- !defined(_SSIZE_T) && !defined(_SSIZE_T_)
+ !defined(_SSIZE_T) && !defined(_SSIZE_T_) && !defined(_SSIZE_T_DECLARED)
// 64-bit Windows is the only mainstream platform
// where sizeof(long) != sizeof(void*)
@@ -37,6 +37,7 @@ typedef long ssize_t; /* byte count or error */
#define __ssize_t_defined
#define _SSIZE_T
#define _SSIZE_T_
+#define _SSIZE_T_DECLARED
#endif
Thanks for the help!
from zip.
Hi @kuba--
so, I'm working on some code using Arduino IDE (2.0.0-rc6) and Blynk library, installed the latest esp32 board package (v 2.0.2).
And my code does compile, but still shows a red underline under the left bracket on
#include <BlynkSimpleEsp32_BT.h>
and it says this:
In included file: typedef redefinition with different types ('int' vs '_ssize_t' (aka 'long long'))clang(redefinition_different_typedef)
arch.h(202, 13): Error occurred here
types.h(184, 18): Previous definition is here
The path for types.h:
C:\Users\User\AppData\Local\Arduino15\packages\esp32\tools\xtensa-esp32-elf-gcc\gcc8_4_0-esp-2021r2\xtensa-esp32-elf\sys-include\sys\types.h
and this is the definition:
#ifndef _SSIZE_T_DECLARED
typedef _ssize_t ssize_t;
#define _SSIZE_T_DECLARED
#endif
Path for arch.h:
C:\Users\User\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.2\tools\sdk\esp32\include\lwip\lwip\src\include\lwip\arch.h
and this is where the error ocurred:
#ifdef SSIZE_MAX
/* If SSIZE_MAX is defined, unistd.h should provide the type as well */
#ifndef LWIP_NO_UNISTD_H
#define LWIP_NO_UNISTD_H 0
#endif
#if !LWIP_NO_UNISTD_H
#include <unistd.h>
#endif
#else /* SSIZE_MAX */
typedef int ssize_t;
#define SSIZE_MAX INT_MAX
#endif /* SSIZE_MAX */
/* some maximum values needed in lwip code */
#define LWIP_UINT32_MAX 0xffffffff
Could you help me out here? I'm not sure what exactly I should change now in my case. Or should I just leave it, since it still compiles?
BTW, I hope I'm not posting in the wrong place here.
from zip.
@zeehead - size_t
is tricky. On most platforms it's defined, but in a different way. But sometimes (very rarely) it's not defined at all. That's why we have the ifdef
here: https://github.com/kuba--/zip/blob/master/src/zip.h#L37
Anyway, you can give me your platform name (how it's defined
), so I can add it to the mentioned ifdef
or you can (as a workaround):
#define _POSIX_C_SOURCE
before you include zip.h
.
from zip.
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