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assert: Remove the use of %n from __assert_fail_base (BZ #32456)

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The require size for mmap can be inferred from __vasprintf return
value.  It also fixes tst-assert-2 when building with --enable-fortify,
where even if the format is not translated, __readonly_area fails
because malloc can not be used.

Checked on aarch64-linux-gnu.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
This commit is contained in:
Adhemerval Zanella
2024-12-30 16:36:18 -03:00
parent 37d0a3e55a
commit 6f0ea84f17
3 changed files with 15 additions and 26 deletions
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2
assert/assert-perr.c
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@@ -32,7 +32,7 @@ __assert_perror_fail (int errnum,
char errbuf[1024]; char errbuf[1024];
char *e = __strerror_r (errnum, errbuf, sizeof errbuf); char *e = __strerror_r (errnum, errbuf, sizeof errbuf);
__assert_fail_base (_("%s%s%s:%u: %s%sUnexpected error: %s.\n%n"), __assert_fail_base (_("%s%s%s:%u: %s%sUnexpected error: %s.\n"),
e, file, line, function); e, file, line, function);
} }
libc_hidden_def (__assert_perror_fail) libc_hidden_def (__assert_perror_fail)

21
assert/assert.c
View File

@@ -15,24 +15,17 @@
License along with the GNU C Library; if not, see License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */ <https://www.gnu.org/licenses/>. */
#include <assert.h> #include <intprops.h>
#include <atomic.h>
#include <ldsodefs.h> #include <ldsodefs.h>
#include <libintl.h> #include <libintl.h>
#include <stdio.h> #include <libio/iolibio.h>
#include <stdlib.h>
#include <sysdep.h>
#include <unistd.h>
#include <sys/mman.h>
#include <setvmaname.h> #include <setvmaname.h>
#include <sys/uio.h> #include <sys/uio.h>
#include <intprops.h> #include <unistd.h>
extern const char *__progname; extern const char *__progname;
#include <wchar.h>
#include <libio/iolibio.h>
#define fflush(s) _IO_fflush (s) #define fflush(s) _IO_fflush (s)
/* This function, when passed a string containing an asserted /* This function, when passed a string containing an asserted
@@ -56,12 +49,12 @@ __assert_fail_base (const char *fmt, const char *assertion, const char *file,
FATAL_PREPARE; FATAL_PREPARE;
#endif #endif
int total; int total = __asprintf (&str, fmt,
if (__asprintf (&str, fmt,
__progname, __progname[0] ? ": " : "", __progname, __progname[0] ? ": " : "",
file, line, file, line,
function ? function : "", function ? ": " : "", function ? function : "", function ? ": " : "",
assertion, &total) >= 0) assertion);
if (total >= 0)
{ {
/* Print the message. */ /* Print the message. */
(void) __fxprintf (NULL, "%s", str); (void) __fxprintf (NULL, "%s", str);
@@ -129,6 +122,6 @@ void
__assert_fail (const char *assertion, const char *file, unsigned int line, __assert_fail (const char *assertion, const char *file, unsigned int line,
const char *function) const char *function)
{ {
__assert_fail_base (_("%s%s%s:%u: %s%sAssertion `%s' failed.\n%n"), __assert_fail_base (_("%s%s%s:%u: %s%sAssertion `%s' failed.\n"),
assertion, file, line, function); assertion, file, line, function);
} }

12
po/libc.pot
View File

@@ -6,7 +6,7 @@
msgid "" msgid ""
msgstr "" msgstr ""
"Project-Id-Version: libc 2.40.9000\n" "Project-Id-Version: libc 2.40.9000\n"
"POT-Creation-Date: 2024-12-30 16:29-0300\n" "POT-Creation-Date: 2024-12-30 16:34-0300\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n" "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n" "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n" "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -102,16 +102,12 @@ msgstr ""
#: assert/assert-perr.c:35 #: assert/assert-perr.c:35
#, c-format #, c-format
msgid "" msgid "%s%s%s:%u: %s%sUnexpected error: %s.\n"
"%s%s%s:%u: %s%sUnexpected error: %s.\n"
"%n"
msgstr "" msgstr ""
#: assert/assert.c:132 #: assert/assert.c:125
#, c-format #, c-format
msgid "" msgid "%s%s%s:%u: %s%sAssertion `%s' failed.\n"
"%s%s%s:%u: %s%sAssertion `%s' failed.\n"
"%n"
msgstr "" msgstr ""
#: catgets/gencat.c:111 #: catgets/gencat.c:111