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configure.ac: Check for more headers, functions.

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2004-10-12  Frank Ch. Eigler  <fche@redhat.com>

	* configure.ac: Check for more headers, functions.
	* mf-hooks2.c (mkbuffer, unmkbuffer): New helper functions for
	tracking overridden FILE buffers.
	(fopen, setvbuf): New/revised hook functions for buffer overriding.
	(setbuf,setlinebuf,fdopen,freopen,fopen64,freopen64,fclose): Ditto.
	(fflush): Accept given NULL stream (means "all streams").
	* mf-runtime.h.in:
	* mf-runtime.c (__mfu_check): Accept accesses that span adjacent
	HEAP/GUESS objects.
	(LOOKUP_CACHE_SIZE_MAX): Raise to 64K entries tentatively.
	(__mf_adapt_cache): Use them all.
	* testsuite/libmudflap.c/pass35-frag.c: Update warning message.
	* testsuite/libmudflap.c++/ctors.exp: Ditto.
	* testsuite/libmudflap.c/{pass51,pass52}-frag.c: New tests.
	* configure, config.h.in: Regenerated.

From-SVN: r88996
This commit is contained in:
Frank Ch. Eigler 2004-10-13 18:27:16 +00:00 committed by Frank Ch. Eigler
parent ccab73c3b7
commit ddfabf89bb
11 changed files with 493 additions and 40 deletions
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18
libmudflap/ChangeLog
View File

@ -1,3 +1,21 @@
2004-10-12 Frank Ch. Eigler <fche@redhat.com>
* configure.ac: Check for more headers, functions.
* mf-hooks2.c (mkbuffer, unmkbuffer): New helper functions for
tracking overridden FILE buffers.
(fopen, setvbuf): New/revised hook functions for buffer overriding.
(setbuf,setlinebuf,fdopen,freopen,fopen64,freopen64,fclose): Ditto.
(fflush): Accept given NULL stream (means "all streams").
* mf-runtime.h.in:
* mf-runtime.c (__mfu_check): Accept accesses that span adjacent
HEAP/GUESS objects.
(LOOKUP_CACHE_SIZE_MAX): Raise to 64K entries tentatively.
(__mf_adapt_cache): Use them all.
* testsuite/libmudflap.c/pass35-frag.c: Update warning message.
* testsuite/libmudflap.c++/ctors.exp: Ditto.
* testsuite/libmudflap.c/{pass51,pass52}-frag.c: New tests.
* configure, config.h.in: Regenerated.
2004-10-05 Frank Ch. Eigler <fche@redhat.com>
* configure.ac: Checking for sys/socket.h once is enough.

24
libmudflap/config.h.in
View File

@ -33,6 +33,9 @@
/* Define to 1 if you have the `fopen64' function. */
#undef HAVE_FOPEN64
/* Define to 1 if you have the `freopen64' function. */
#undef HAVE_FREOPEN64
/* Define to 1 if you have the `fseeko64' function. */
#undef HAVE_FSEEKO64
@ -126,9 +129,15 @@
/* Define to 1 if you have the `memrchr' function. */
#undef HAVE_MEMRCHR
/* Define to 1 if you have the `mmap' function. */
#undef HAVE_MMAP
/* Define to 1 if you have the <mntent.h> header file. */
#undef HAVE_MNTENT_H
/* Define to 1 if you have the `munmap' function. */
#undef HAVE_MUNMAP
/* Define to 1 if you have the <netdb.h> header file. */
#undef HAVE_NETDB_H
@ -141,12 +150,24 @@
/* Define to 1 if you have the <pwd.h> header file. */
#undef HAVE_PWD_H
/* Define to 1 if you have the `setbuf' function. */
#undef HAVE_SETBUF
/* Define to 1 if you have the `setbuffer' function. */
#undef HAVE_SETBUFFER
/* Define to 1 if you have the `sethostname' function. */
#undef HAVE_SETHOSTNAME
/* Define to 1 if you have the `setlinebuf' function. */
#undef HAVE_SETLINEBUF
/* Define to 1 if you have the `setmntent' function. */
#undef HAVE_SETMNTENT
/* Define to 1 if you have the `setvbuf' function. */
#undef HAVE_SETVBUF
/* Define to 1 if you have the `signal' function. */
#undef HAVE_SIGNAL
@ -180,6 +201,9 @@
/* Define to 1 if you have the <sys/ipc.h> header file. */
#undef HAVE_SYS_IPC_H
/* Define to 1 if you have the <sys/mman.h> header file. */
#undef HAVE_SYS_MMAN_H
/* Define to 1 if you have the <sys/sem.h> header file. */
#undef HAVE_SYS_SEM_H

117
libmudflap/configure vendored
View File

@ -3596,10 +3596,11 @@ done
for ac_header in stdint.h execinfo.h signal.h dlfcn.h dirent.h pwd.h grp.h \
netdb.h sys/ipc.h sys/sem.h sys/shm.h sys/wait.h ctype.h mntent.h \
sys/socket.h netinet/in.h arpa/inet.h dlfcn.h
sys/socket.h netinet/in.h arpa/inet.h dlfcn.h sys/mman.h
do
as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
if eval "test \"\${$as_ac_Header+set}\" = set"; then
@ -3858,7 +3859,113 @@ done
for ac_func in fopen64 fseeko64 ftello64 stat64
for ac_func in fopen64 fseeko64 ftello64 stat64 freopen64
do
as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
echo "$as_me:$LINENO: checking for $ac_func" >&5
echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
if eval "test \"\${$as_ac_var+set}\" = set"; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
For example, HP-UX 11i <limits.h> declares gettimeofday. */
#define $ac_func innocuous_$ac_func
/* System header to define __stub macros and hopefully few prototypes,
which can conflict with char $ac_func (); below.
Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
<limits.h> exists even on freestanding compilers. */
#ifdef __STDC__
# include <limits.h>
#else
# include <assert.h>
#endif
#undef $ac_func
/* Override any gcc2 internal prototype to avoid an error. */
#ifdef __cplusplus
extern "C"
{
#endif
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char $ac_func ();
/* The GNU C library defines this for functions which it implements
to always fail with ENOSYS. Some functions are actually named
something starting with __ and the normal name is an alias. */
#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
choke me
#else
char (*f) () = $ac_func;
#endif
#ifdef __cplusplus
}
#endif
int
main ()
{
return f != $ac_func;
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
eval "$as_ac_var=yes"
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
eval "$as_ac_var=no"
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
fi
echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
if test `eval echo '${'$as_ac_var'}'` = yes; then
cat >>confdefs.h <<_ACEOF
#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
_ACEOF
fi
done
for ac_func in setbuf setbuffer setlinebuf setvbuf
do
as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
echo "$as_me:$LINENO: checking for $ac_func" >&5
@ -4699,7 +4806,9 @@ fi
done
for ac_func in inet_ntoa
for ac_func in inet_ntoa mmap munmap
do
as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
echo "$as_me:$LINENO: checking for $ac_func" >&5
@ -5656,7 +5765,7 @@ test x"$pic_mode" = xno && libtool_flags="$libtool_flags --prefer-non-pic"
case $host in
*-*-irix6*)
# Find out which ABI we are using.
echo '#line 5659 "configure"' > conftest.$ac_ext
echo '#line 5768 "configure"' > conftest.$ac_ext
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
(eval $ac_compile) 2>&5
ac_status=$?

7
libmudflap/configure.ac
View File

@ -61,10 +61,11 @@ enable_shared=no])
AC_CHECK_HEADERS(stdint.h execinfo.h signal.h dlfcn.h dirent.h pwd.h grp.h \
netdb.h sys/ipc.h sys/sem.h sys/shm.h sys/wait.h ctype.h mntent.h \
sys/socket.h netinet/in.h arpa/inet.h dlfcn.h)
sys/socket.h netinet/in.h arpa/inet.h dlfcn.h sys/mman.h)
AC_CHECK_FUNCS(backtrace backtrace_symbols gettimeofday signal)
AC_CHECK_FUNCS(fopen64 fseeko64 ftello64 stat64)
AC_CHECK_FUNCS(fopen64 fseeko64 ftello64 stat64 freopen64)
AC_CHECK_FUNCS(setbuf setbuffer setlinebuf setvbuf)
AC_CHECK_FUNCS(strnlen memrchr strncpy memmem sethostname)
AC_CHECK_FUNCS(__ctype_b_loc __ctype_tolower_loc __ctype_toupper_loc)
AC_CHECK_FUNCS(getlogin cuserid getpwnam getpwuid getpwent getgrnam getgrgid getgrent)
@ -72,7 +73,7 @@ AC_CHECK_FUNCS(getlogin_r getpwnam_r getpwuid_r getgrnam_r getgrgid_r)
AC_CHECK_FUNCS(getservent getservbyname getservbyport getaddrinfo gai_strerror)
AC_CHECK_FUNCS(getprotoent getprotobyname getprotobynumber)
AC_CHECK_FUNCS(getmntent setmntent addmntent)
AC_CHECK_FUNCS(inet_ntoa)
AC_CHECK_FUNCS(inet_ntoa mmap munmap)
AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/ipc.h>

221
libmudflap/mf-hooks2.c
View File

@ -584,6 +584,66 @@ WRAPPER2(char *, strerror, int errnum)
}
/* An auxiliary data structure for tracking the hand-made stdio
buffers we generate during the fopen/fopen64 hooks. In a civilized
language, this would be a simple dynamically sized FILE*->char*
lookup table, but this is C and we get to do it by hand. */
struct mf_filebuffer
{
FILE *file;
char *buffer;
struct mf_filebuffer *next;
};
static struct mf_filebuffer *mf_filebuffers = NULL;
static void
mkbuffer (FILE *f)
{
/* Reset any buffer automatically provided by libc, since this may
have been done via mechanisms that libmudflap couldn't
intercept. */
int rc;
size_t bufsize = BUFSIZ;
int bufmode;
char *buffer = malloc (bufsize);
struct mf_filebuffer *b = malloc (sizeof (struct mf_filebuffer));
assert ((buffer != NULL) && (b != NULL));
/* Link it into list. */
b->file = f;
b->buffer = buffer;
b->next = mf_filebuffers;
mf_filebuffers = b;
/* Determine how the file is supposed to be buffered at the moment. */
bufmode = fileno (f) == 2 ? _IONBF : (isatty (fileno (f)) ? _IOLBF : _IOFBF);
rc = setvbuf (f, buffer, bufmode, bufsize);
assert (rc == 0);
}
static void
unmkbuffer (FILE *f)
{
struct mf_filebuffer *b = mf_filebuffers;
struct mf_filebuffer **pb = & mf_filebuffers;
while (b != NULL)
{
if (b->file == f)
{
*pb = b->next;
free (b->buffer);
free (b);
return;
}
pb = & b->next;
b = b->next;
}
}
WRAPPER2(FILE *, fopen, const char *path, const char *mode)
{
size_t n;
@ -602,6 +662,106 @@ WRAPPER2(FILE *, fopen, const char *path, const char *mode)
__mf_register (p, sizeof (*p), MF_REGISTER_fopen, "fopen result");
#endif
MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "fopen result");
mkbuffer (p);
}
return p;
}
WRAPPER2(int, setvbuf, FILE *stream, char *buf, int mode, size_t size)
{
int rc = 0;
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE, "setvbuf stream");
unmkbuffer (stream);
if (buf != NULL)
MF_VALIDATE_EXTENT (buf, size, __MF_CHECK_WRITE, "setvbuf buffer");
/* Override the user only if it's an auto-allocated buffer request. Otherwise
assume that the supplied buffer is already known to libmudflap. */
if ((buf == NULL) && ((mode == _IOFBF) || (mode == _IOLBF)))
mkbuffer (stream);
else
rc = setvbuf (stream, buf, mode, size);
return rc;
}
#ifdef HAVE_SETBUF
WRAPPER2(int, setbuf, FILE* stream, char *buf)
{
return __mfwrap_setvbuf (stream, buf, buf ? _IOFBF : _IONBF, BUFSIZ);
}
#endif
#ifdef HAVE_SETBUFFER
WRAPPER2(int, setbuffer, FILE* stream, char *buf, size_t sz)
{
return __mfwrap_setvbuf (stream, buf, buf ? _IOFBF : _IONBF, sz);
}
#endif
#ifdef HAVE_SETLINEBUF
WRAPPER2(int, setlinebuf, FILE* stream)
{
return __mfwrap_setvbuf(stream, NULL, _IOLBF, 0);
}
#endif
WRAPPER2(FILE *, fdopen, int fd, const char *mode)
{
size_t n;
FILE *p;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (mode);
MF_VALIDATE_EXTENT (mode, CLAMPADD(n, 1), __MF_CHECK_READ, "fdopen mode");
p = fdopen (fd, mode);
if (NULL != p) {
#ifdef MF_REGISTER_fopen
__mf_register (p, sizeof (*p), MF_REGISTER_fopen, "fdopen result");
#endif
MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "fdopen result");
mkbuffer (p);
}
return p;
}
WRAPPER2(FILE *, freopen, const char *path, const char *mode, FILE *s)
{
size_t n;
FILE *p;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (path);
MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "freopen path");
MF_VALIDATE_EXTENT (s, (sizeof (*s)), __MF_CHECK_WRITE, "freopen stream");
unmkbuffer (s);
n = strlen (mode);
MF_VALIDATE_EXTENT (mode, CLAMPADD(n, 1), __MF_CHECK_READ, "freopen mode");
p = freopen (path, mode, s);
if (NULL != p) {
#ifdef MF_REGISTER_fopen
__mf_register (p, sizeof (*p), MF_REGISTER_fopen, "freopen result");
#endif
MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "freopen result");
mkbuffer (p);
}
return p;
@ -627,6 +787,39 @@ WRAPPER2(FILE *, fopen64, const char *path, const char *mode)
__mf_register (p, sizeof (*p), MF_REGISTER_fopen, "fopen64 result");
#endif
MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "fopen64 result");
mkbuffer (p);
}
return p;
}
#endif
#ifdef HAVE_FREOPEN64
WRAPPER2(FILE *, freopen64, const char *path, const char *mode, FILE *s)
{
size_t n;
FILE *p;
TRACE ("%s\n", __PRETTY_FUNCTION__);
n = strlen (path);
MF_VALIDATE_EXTENT (path, CLAMPADD(n, 1), __MF_CHECK_READ, "freopen64 path");
MF_VALIDATE_EXTENT (s, (sizeof (*s)), __MF_CHECK_WRITE, "freopen64 stream");
unmkbuffer (s);
n = strlen (mode);
MF_VALIDATE_EXTENT (mode, CLAMPADD(n, 1), __MF_CHECK_READ, "freopen64 mode");
p = freopen (path, mode, s);
if (NULL != p) {
#ifdef MF_REGISTER_fopen
__mf_register (p, sizeof (*p), MF_REGISTER_fopen, "freopen64 result");
#endif
MF_VALIDATE_EXTENT (p, sizeof (*p), __MF_CHECK_WRITE, "freopen64 result");
mkbuffer (p);
}
return p;
@ -644,6 +837,7 @@ WRAPPER2(int, fclose, FILE *stream)
#ifdef MF_REGISTER_fopen
__mf_unregister (stream, sizeof (*stream), MF_REGISTER_fopen);
#endif
unmkbuffer (stream);
return resp;
}
@ -943,8 +1137,9 @@ WRAPPER2(int , remove, const char *path)
WRAPPER2(int, fflush, FILE *stream)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fflush stream");
if (stream != NULL)
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"fflush stream");
return fflush (stream);
}
@ -1071,28 +1266,6 @@ WRAPPER2(int , mkfifo, const char *path, mode_t mode)
}
WRAPPER2(int, setvbuf, FILE *stream, char *buf, int mode , size_t size)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"setvbuf stream");
if (NULL != buf)
MF_VALIDATE_EXTENT (buf, size, __MF_CHECK_READ, "setvbuf buf");
return setvbuf (stream, buf, mode, size);
}
WRAPPER2(void, setbuf, FILE *stream, char *buf)
{
TRACE ("%s\n", __PRETTY_FUNCTION__);
MF_VALIDATE_EXTENT (stream, sizeof (*stream), __MF_CHECK_WRITE,
"setbuf stream");
if (NULL != buf)
MF_VALIDATE_EXTENT (buf, BUFSIZ, __MF_CHECK_READ, "setbuf buf");
setbuf (stream, buf);
}
#ifdef HAVE_DIRENT_H
WRAPPER2(DIR *, opendir, const char *path)
{

60
libmudflap/mf-runtime.c
View File

@ -160,7 +160,7 @@ static void mfsplay_tree_rebalance (mfsplay_tree sp);
/* Required globals. */
#define LOOKUP_CACHE_MASK_DFL 1023
#define LOOKUP_CACHE_SIZE_MAX 4096 /* Allows max CACHE_MASK 0x0FFF */
#define LOOKUP_CACHE_SIZE_MAX 65536 /* Allows max CACHE_MASK 0xFFFF */
#define LOOKUP_CACHE_SHIFT_DFL 2
struct __mf_cache __mf_lookup_cache [LOOKUP_CACHE_SIZE_MAX];
@ -917,7 +917,7 @@ void __mfu_check (void *ptr, size_t sz, int type, const char *location)
judgement = -1;
}
/* We now know that the access spans one or more valid objects. */
/* We now know that the access spans one or more only valid objects. */
if (LIKELY (judgement >= 0))
for (i = 0; i < obj_count; i++)
{
@ -931,12 +931,58 @@ void __mfu_check (void *ptr, size_t sz, int type, const char *location)
entry->high = obj->high;
judgement = 1;
}
/* XXX: Access runs off left or right side of this
object. That could be okay, if there are
other objects that fill in all the holes. */
}
/* This access runs off the end of one valid object. That
could be okay, if other valid objects fill in all the
holes. We allow this only for HEAP and GUESS type
objects. Accesses to STATIC and STACK variables
should not be allowed to span. */
if (UNLIKELY ((judgement == 0) && (obj_count > 1)))
{
unsigned uncovered = 0;
for (i = 0; i < obj_count; i++)
{
__mf_object_t *obj = all_ovr_obj[i];
int j, uncovered_low_p, uncovered_high_p;
uintptr_t ptr_lower, ptr_higher;
uncovered_low_p = ptr_low < obj->low;
ptr_lower = CLAMPSUB (obj->low, 1);
uncovered_high_p = ptr_high > obj->high;
ptr_higher = CLAMPADD (obj->high, 1);
for (j = 0; j < obj_count; j++)
{
__mf_object_t *obj2 = all_ovr_obj[j];
if (i == j) continue;
/* Filter out objects that cannot be spanned across. */
if (obj2->type == __MF_TYPE_STACK
|| obj2->type == __MF_TYPE_STATIC)
continue;
/* Consider a side "covered" if obj2 includes
the next byte on that side. */
if (uncovered_low_p
&& (ptr_lower >= obj2->low && ptr_lower <= obj2->high))
uncovered_low_p = 0;
if (uncovered_high_p
&& (ptr_high >= obj2->low && ptr_higher <= obj2->high))
uncovered_high_p = 0;
}
if (uncovered_low_p || uncovered_high_p)
uncovered ++;
}
/* Success if no overlapping objects are uncovered. */
if (uncovered == 0)
judgement = 1;
}
if (dealloc_me != NULL)
CALL_REAL (free, dealloc_me);
@ -1413,7 +1459,7 @@ __mf_adapt_cache ()
cache_utilization += 1.0;
cache_utilization /= (1 + __mf_lc_mask);
new_mask |= 0x3ff; /* XXX: force a large cache. */
new_mask |= 0xffff; /* XXX: force a large cache. */
new_mask &= (LOOKUP_CACHE_SIZE_MAX - 1);
VERBOSE_TRACE ("adapt cache obj=%u/%u sizes=%lu/%.0f/%.0f => "

5
libmudflap/mf-runtime.h.in
View File

@ -108,6 +108,8 @@ extern int __mf_set_options (const char *opts);
#pragma redefine_extname time __mfwrap_time
#pragma redefine_extname strerror __mfwrap_strerror
#pragma redefine_extname fopen __mfwrap_fopen
#pragma redefine_extname fdopen __mfwrap_fdopen
#pragma redefine_extname freopen __mfwrap_freopen
#pragma redefine_extname fclose __mfwrap_fclose
#pragma redefine_extname fread __mfwrap_fread
#pragma redefine_extname fwrite __mfwrap_fwrite
@ -146,6 +148,8 @@ extern int __mf_set_options (const char *opts);
#pragma redefine_extname mkfifo __mfwrap_mkfifo
#pragma redefine_extname setvbuf __mfwrap_setvbuf
#pragma redefine_extname setbuf __mfwrap_setbuf
#pragma redefine_extname setbuffer __mfwrap_setbuffer
#pragma redefine_extname setlinebuf __mfwrap_setlinebuf
#pragma redefine_extname opendir __mfwrap_opendir
#pragma redefine_extname closedir __mfwrap_closedir
#pragma redefine_extname readdir __mfwrap_readdir
@ -176,6 +180,7 @@ extern int __mf_set_options (const char *opts);
#pragma redefine_extname dlsym __mfwrap_dlsym
#pragma redefine_extname dlclose __mfwrap_dlclose
#pragma redefine_extname fopen64 __mfwrap_fopen64
#pragma redefine_extname freopen64 __mfwrap_freopen64
#pragma redefine_extname stat64 __mfwrap_stat64
#pragma redefine_extname fseeko64 __mfwrap_fseeko64
#pragma redefine_extname ftello64 __mfwrap_ftello64

2
libmudflap/testsuite/libmudflap.c++/ctors.exp
View File

@ -8,7 +8,7 @@ global srcdir subdir
foreach flags [list {} {-static} {-O2} {-O3}] {
set l1 [libmudflap_target_compile "$srcdir/$subdir/ctors-1.cxx" "ctors-1.o" object {additional_flags=-fmudflap}]
set test "ctors-1 compilation ${flags}"
if [string match "*mudflap cannot track lifetime of*k*" $l1] { pass $test } { fail $test }
if [string match "*mudflap cannot track unknown size extern *k*" $l1] { pass $test } { fail $test }
set l2 [libmudflap_target_compile "$srcdir/$subdir/ctors-2.cxx" "ctors-2.o" object {additional_flags=-fmudflap}]
set test "ctors-2 compilation ${flags}"

2
libmudflap/testsuite/libmudflap.c/pass35-frag.c
View File

@ -3,7 +3,7 @@
#include <string.h>
extern char end []; /* Any old symbol we're sure will be defined. */
/* { dg-warning "cannot track lifetime of 'end'" "cannot track lifetime" { target *-*-* } 0 } */
/* { dg-warning "cannot track unknown size extern 'end'" "cannot track unknown size extern" { target *-*-* } 0 } */
int main ()
{

41
libmudflap/testsuite/libmudflap.c/pass51-frag.c Normal file
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@ -0,0 +1,41 @@
/* Test object-spanning accesses. This is most conveniently done with
mmap, thus the config.h specificity here. */
#include "../config.h"
#include <unistd.h>
#include <string.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
int main ()
{
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif
#ifdef HAVE_MMAP
void *p;
unsigned pg = getpagesize ();
int rc;
p = mmap (NULL, 4 * pg, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
if (p == NULL)
return 1;
memset (p, 0, 4*pg);
rc = munmap (p, pg);
if (rc < 0) return 1;
memset (p+pg, 0, 3*pg);
rc = munmap (p+pg, pg);
if (rc < 0) return 1;
memset (p+2*pg, 0, 2*pg);
rc = munmap (p+2*pg, pg);
if (rc < 0) return 1;
memset (p+3*pg, 0, pg);
rc = munmap (p+3*pg, pg);
if (rc < 0) return 1;
#endif
return 0;
}

36
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@ -0,0 +1,36 @@
#include <stdio.h>
void writestuff (FILE *f)
{
fprintf (f, "hello world\n");
fputc ('y', f);
putc ('e', f);
}
void readstuff (FILE *f)
{
int c, d;
char stuff[100], *s;
c = fgetc (f);
ungetc (c, f);
d = fgetc (f);
s = fgets (stuff, sizeof(stuff), f);
}
int main ()
{
FILE *f;
writestuff (stdout);
writestuff (stderr);
f = fopen ("/dev/null", "w");
writestuff (f);
fclose (f);
f = fopen ("/dev/zero", "r");
readstuff (f);
f = freopen ("/dev/null", "w", f);
writestuff (f);
fclose (f);
return 0;
}