Compiling for Android 4.3 (with recent Android 9.0 header files), I'm seeing
compilation failures in the stdioext modules. Such as:
In file included from fseterr.c:24:0:
stdio-impl.h:72:22: error: field '_ub' has incomplete type
struct __sbuf _ub; /* ungetc buffer */
^
fseterr.c: In function 'fseterr':
fseterr.c:37:6: error: 'FILE' has no member named '_flags'
fp_->_flags |= __SERR;
^
fseterr.c:37:18: error: '__SERR' undeclared (first use in this function)
fp_->_flags |= __SERR;
^
This fixes them.
2018-05-13 Bruno Haible <br...@clisp.org>
stdioext: Fix compilation errors with newer Android headers.
* lib/stdio-impl.h (fp_, fp_ub): Define differently for Android.
(__SLBF, __SNBF, __SRD, __SWR, __SRW, __SEOF, __SERR, __SOFF): Define
fallbacks for Android.
* lib/fpending.c: Update comments.
* lib/fpurge.c: Likewise.
* lib/freadable.h: Likewise.
* lib/freadable.c: Likewise.
* lib/freadahead.c: Likewise.
* lib/freading.h: Likewise.
* lib/freadptr.c: Likewise.
* lib/fseterr.c: Likewise.
* lib/fwritable.h: Likewise.
* lib/fwritable.c: Likewise.
* lib/fwriting.h: Likewise.
* lib/fwriting.c: Likewise.
diff --git a/lib/fpending.c b/lib/fpending.c
index 7bc235d..de370d4 100644
--- a/lib/fpending.c
+++ b/lib/fpending.c
@@ -24,6 +24,9 @@
#include "stdio-impl.h"
+/* This file is not used on systems that already have the __fpending function,
+ namely glibc >= 2.2, Solaris >= 7, Android API >= 23. */
+
/* Return the number of pending (aka buffered, unflushed)
bytes on the stream, FP, that is open for writing. */
size_t
diff --git a/lib/fpurge.c b/lib/fpurge.c
index 554790b..f9c82cd 100644
--- a/lib/fpurge.c
+++ b/lib/fpurge.c
@@ -19,7 +19,7 @@
/* Specification. */
#include <stdio.h>
-#if HAVE___FPURGE /* glibc >= 2.2, Haiku, Solaris >= 7 */
+#if HAVE___FPURGE /* glibc >= 2.2, Haiku, Solaris >= 7,
Android API >= 23 */
# include <stdio_ext.h>
#endif
#include <stdlib.h>
@@ -29,7 +29,7 @@
int
fpurge (FILE *fp)
{
-#if HAVE___FPURGE /* glibc >= 2.2, Haiku, Solaris >= 7, musl
libc */
+#if HAVE___FPURGE /* glibc >= 2.2, Haiku, Solaris >= 7,
Android API >= 23, musl libc */
__fpurge (fp);
/* The __fpurge function does not have a return value. */
diff --git a/lib/freadable.c b/lib/freadable.c
index 53cdbee..f4ce079 100644
--- a/lib/freadable.c
+++ b/lib/freadable.c
@@ -25,6 +25,9 @@
# include <fcntl.h>
#endif
+/* This file is not used on systems that have the __freadable function,
+ namely glibc >= 2.2, Solaris >= 7, Android API >= 23, musl libc. */
+
bool
freadable (FILE *fp)
{
diff --git a/lib/freadable.h b/lib/freadable.h
index 000e95b..4b51570 100644
--- a/lib/freadable.h
+++ b/lib/freadable.h
@@ -22,7 +22,7 @@
STREAM must not be wide-character oriented.
The result doesn't change until the stream is closed or re-opened. */
-#if HAVE___FREADABLE /* glibc >= 2.2, Solaris >= 7, musl libc */
+#if HAVE___FREADABLE /* glibc >= 2.2, Solaris >= 7, Android API >= 23, musl
libc */
# include <stdio_ext.h>
# define freadable(stream) (__freadable (stream) != 0)
diff --git a/lib/freadahead.c b/lib/freadahead.c
index ed3dd0e..fd5411c 100644
--- a/lib/freadahead.c
+++ b/lib/freadahead.c
@@ -27,6 +27,9 @@
extern size_t __sreadahead (FILE *);
#endif
+/* This file is not used on systems that have the __freadahead function,
+ namely musl libc. */
+
size_t
freadahead (FILE *fp)
{
diff --git a/lib/freading.h b/lib/freading.h
index 29d92b1..31d71fd 100644
--- a/lib/freading.h
+++ b/lib/freading.h
@@ -33,7 +33,7 @@
STREAM must not be wide-character oriented. */
#if HAVE___FREADING && (!defined __GLIBC__ || defined __UCLIBC__ || __GLIBC__
> 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
-/* Solaris >= 7, not glibc >= 2.2, but glibc >= 2.7, or musl libc */
+/* Solaris >= 7, Android API >= 29, not glibc >= 2.2, but glibc >= 2.7, or
musl libc */
# include <stdio_ext.h>
# define freading(stream) (__freading (stream) != 0)
diff --git a/lib/freadptr.c b/lib/freadptr.c
index 3afa621..9176559 100644
--- a/lib/freadptr.c
+++ b/lib/freadptr.c
@@ -23,6 +23,9 @@
#include "stdio-impl.h"
+/* This file is not used on systems that have the __freadptr function,
+ namely musl libc. */
+
const char *
freadptr (FILE *fp, size_t *sizep)
{
diff --git a/lib/fseterr.c b/lib/fseterr.c
index fd9da63..81f51ed 100644
--- a/lib/fseterr.c
+++ b/lib/fseterr.c
@@ -23,6 +23,9 @@
#include "stdio-impl.h"
+/* This file is not used on systems that have the __fseterr function,
+ namely musl libc. */
+
void
fseterr (FILE *fp)
{
diff --git a/lib/fwritable.c b/lib/fwritable.c
index 24a148a..79e7c38 100644
--- a/lib/fwritable.c
+++ b/lib/fwritable.c
@@ -25,6 +25,9 @@
# include <fcntl.h>
#endif
+/* This file is not used on systems that have the __fwritable function,
+ namely glibc >= 2.2, Solaris >= 7, Android API >= 23, musl libc. */
+
bool
fwritable (FILE *fp)
{
diff --git a/lib/fwritable.h b/lib/fwritable.h
index 1821352..43ce3d6 100644
--- a/lib/fwritable.h
+++ b/lib/fwritable.h
@@ -22,7 +22,7 @@
STREAM must not be wide-character oriented.
The result doesn't change until the stream is closed or re-opened. */
-#if HAVE___FWRITABLE /* glibc >= 2.2, Solaris >= 7, musl libc */
+#if HAVE___FWRITABLE /* glibc >= 2.2, Solaris >= 7, Android API >= 23, musl
libc */
# include <stdio_ext.h>
# define fwritable(stream) (__fwritable (stream) != 0)
diff --git a/lib/fwriting.c b/lib/fwriting.c
index 9be6fb2..4ffa12d 100644
--- a/lib/fwriting.c
+++ b/lib/fwriting.c
@@ -21,6 +21,9 @@
#include "stdio-impl.h"
+/* This file is not used on systems that have the __fwritable function,
+ namely glibc >= 2.2, Solaris >= 7, Android API >= 29, musl libc. */
+
bool
fwriting (FILE *fp)
{
diff --git a/lib/fwriting.h b/lib/fwriting.h
index f2a6c5e..42f7e94 100644
--- a/lib/fwriting.h
+++ b/lib/fwriting.h
@@ -33,7 +33,7 @@
STREAM must not be wide-character oriented. */
-#if HAVE___FWRITING /* glibc >= 2.2, Solaris >= 7, musl libc */
+#if HAVE___FWRITING /* glibc >= 2.2, Solaris >= 7, Android API >= 29, musl
libc */
# include <stdio_ext.h>
# define fwriting(stream) (__fwriting (stream) != 0)
diff --git a/lib/stdio-impl.h b/lib/stdio-impl.h
index 7a0ac4d..393ef0c 100644
--- a/lib/stdio-impl.h
+++ b/lib/stdio-impl.h
@@ -60,25 +60,79 @@
# define _flags pub._flags
# define _r pub._r
# define _w pub._w
+# elif defined __ANDROID__ /* Android */
+ /* Up to this commit from 2015-10-12
+
<https://android.googlesource.com/platform/bionic.git/+/f0141dfab10a4b332769d52fa76631a64741297a>
+ the innards of FILE were public, and fp_ub could be defined like for
OpenBSD,
+ see
<https://android.googlesource.com/platform/bionic.git/+/e78392637d5086384a5631ddfdfa8d7ec8326ee3/libc/stdio/fileext.h>
+ and
<https://android.googlesource.com/platform/bionic.git/+/e78392637d5086384a5631ddfdfa8d7ec8326ee3/libc/stdio/local.h>.
+ After this commit, the innards of FILE are hidden. */
+# define fp_ ((struct { unsigned char *_p; \
+ int _r; \
+ int _w; \
+ int _flags; \
+ int _file; \
+ struct { unsigned char *_base; size_t _size; } _bf; \
+ int _lbfsize; \
+ void *_cookie; \
+ void *_close; \
+ void *_read; \
+ void *_seek; \
+ void *_write; \
+ struct { unsigned char *_base; size_t _size; } _ext; \
+ unsigned char *_up; \
+ int _ur; \
+ unsigned char _ubuf[3]; \
+ unsigned char _nbuf[1]; \
+ struct { unsigned char *_base; size_t _size; } _lb; \
+ int _blksize; \
+ fpos_t _offset; \
+ /* More fields, not relevant here. */ \
+ } *) fp)
# else
# define fp_ fp
# endif
-# if (defined __NetBSD__ && __NetBSD_Version__ >= 105270000) || defined
__OpenBSD__ || defined __minix || defined __ANDROID__ /* NetBSD >= 1.5ZA,
OpenBSD, Minix 3, Android */
+# if (defined __NetBSD__ && __NetBSD_Version__ >= 105270000) || defined
__OpenBSD__ || defined __minix /* NetBSD >= 1.5ZA, OpenBSD, Minix 3 */
/* See
<http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup>
- and
<https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup>
*/
+ and
<https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdio/fileext.h?rev=HEAD&content-type=text/x-cvsweb-markup>
+ and
<https://github.com/Stichting-MINIX-Research-Foundation/minix/blob/master/lib/libc/stdio/fileext.h>
*/
struct __sfileext
{
struct __sbuf _ub; /* ungetc buffer */
/* More fields, not relevant here. */
};
# define fp_ub ((struct __sfileext *) fp->_ext._base)->_ub
-# else /* FreeBSD, NetBSD <= 1.5Z,
DragonFly, Mac OS X, Cygwin, Android */
+# elif defined __ANDROID__ /* Android */
+ struct __sfileext
+ {
+ struct { unsigned char *_base; size_t _size; } _ub; /* ungetc buffer */
+ /* More fields, not relevant here. */
+ };
+# define fp_ub ((struct __sfileext *) fp_->_ext._base)->_ub
+# else /* FreeBSD, NetBSD <= 1.5Z,
DragonFly, Mac OS X, Cygwin */
# define fp_ub fp_->_ub
# endif
# define HASUB(fp) (fp_ub._base != NULL)
+# if defined __ANDROID__ /* Android */
+ /* Needed after this commit from 2016-01-25
+
<https://android.googlesource.com/platform/bionic.git/+/e70e0e9267d069bf56a5078c99307e08a7280de7>
*/
+# ifndef __SEOF
+# define __SLBF 1
+# define __SNBF 2
+# define __SRD 4
+# define __SWR 8
+# define __SRW 0x10
+# define __SEOF 0x20
+# define __SERR 0x40
+# endif
+# ifndef __SOFF
+# define __SOFF 0x1000
+# endif
+# endif
+
#endif
