diff options
Diffstat (limited to 'packages/glibc/2.19/0014-utmp-nonstring.patch')
| -rw-r--r-- | packages/glibc/2.19/0014-utmp-nonstring.patch | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/packages/glibc/2.19/0014-utmp-nonstring.patch b/packages/glibc/2.19/0014-utmp-nonstring.patch new file mode 100644 index 0000000..378d62e --- /dev/null +++ b/packages/glibc/2.19/0014-utmp-nonstring.patch @@ -0,0 +1,80 @@ +commit 7532837d7b03b3ca5b9a63d77a5bd81dd23f3d9c +Author: Martin Sebor <msebor@redhat.com> +Date: Wed Nov 15 17:39:59 2017 -0700 + + The -Wstringop-truncation option new in GCC 8 detects common misuses + of the strncat and strncpy function that may result in truncating + the copied string before the terminating NUL. To avoid false positive + warnings for correct code that intentionally creates sequences of + characters that aren't guaranteed to be NUL-terminated, arrays that + are intended to store such sequences should be decorated with a new + nonstring attribute. This change add this attribute to Glibc and + uses it to suppress such false positives. + + ChangeLog: + * misc/sys/cdefs.h (__attribute_nonstring__): New macro. + * sysdeps/gnu/bits/utmp.h (struct utmp): Use it. + * sysdeps/unix/sysv/linux/s390/bits/utmp.h (struct utmp): Same. + +--- + misc/sys/cdefs.h | 9 +++++++++ + sysdeps/gnu/bits/utmp.h | 9 ++++++--- + sysdeps/unix/sysv/linux/s390/bits/utmp.h | 9 ++++++--- + 3 files changed, 21 insertions(+), 6 deletions(-) + +--- a/misc/sys/cdefs.h ++++ b/misc/sys/cdefs.h +@@ -382,6 +382,15 @@ + # define __glibc_likely(cond) (cond) + #endif + ++#if __GNUC_PREREQ (8, 0) ++/* Describes a char array whose address can safely be passed as the first ++ argument to strncpy and strncat, as the char array is not necessarily ++ a NUL-terminated string. */ ++# define __attribute_nonstring__ __attribute__ ((__nonstring__)) ++#else ++# define __attribute_nonstring__ ++#endif ++ + #include <bits/wordsize.h> + + #if defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH +--- a/sysdeps/gnu/bits/utmp.h ++++ b/sysdeps/gnu/bits/utmp.h +@@ -59,10 +59,13 @@ + { + short int ut_type; /* Type of login. */ + pid_t ut_pid; /* Process ID of login process. */ +- char ut_line[UT_LINESIZE]; /* Devicename. */ ++ char ut_line[UT_LINESIZE] ++ __attribute_nonstring__; /* Devicename. */ + char ut_id[4]; /* Inittab ID. */ +- char ut_user[UT_NAMESIZE]; /* Username. */ +- char ut_host[UT_HOSTSIZE]; /* Hostname for remote login. */ ++ char ut_user[UT_NAMESIZE] ++ __attribute_nonstring__; /* Username. */ ++ char ut_host[UT_HOSTSIZE] ++ __attribute_nonstring__; /* Hostname for remote login. */ + struct exit_status ut_exit; /* Exit status of a process marked + as DEAD_PROCESS. */ + /* The ut_session and ut_tv fields must be the same size when compiled +--- a/sysdeps/unix/sysv/linux/s390/bits/utmp.h ++++ b/sysdeps/unix/sysv/linux/s390/bits/utmp.h +@@ -59,10 +59,13 @@ + { + short int ut_type; /* Type of login. */ + pid_t ut_pid; /* Process ID of login process. */ +- char ut_line[UT_LINESIZE]; /* Devicename. */ ++ char ut_line[UT_LINESIZE] ++ __attribute_nonstring__; /* Devicename. */ + char ut_id[4]; /* Inittab ID. */ +- char ut_user[UT_NAMESIZE]; /* Username. */ +- char ut_host[UT_HOSTSIZE]; /* Hostname for remote login. */ ++ char ut_user[UT_NAMESIZE] ++ __attribute_nonstring__; /* Username. */ ++ char ut_host[UT_HOSTSIZE] ++ __attribute_nonstring__; /* Hostname for remote login. */ + struct exit_status ut_exit; /* Exit status of a process marked + as DEAD_PROCESS. */ + /* The ut_session and ut_tv fields must be the same size when compiled |