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author | Stafford Horne <shorne@gmail.com> | 2021-06-07 22:10:19 +0900 |
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committer | Stafford Horne <shorne@gmail.com> | 2021-08-15 07:09:58 +0900 |
commit | 6e8a0aac2f883a23efb1683b120499138f9e6021 (patch) | |
tree | 86beef99917497f8d66fd1df6e4be6b25bb550b2 /include/time.h | |
parent | 0f62fe053273ff6c62ac95c59b7687c964737b00 (diff) | |
download | glibc-6e8a0aac2f883a23efb1683b120499138f9e6021.tar.gz glibc-6e8a0aac2f883a23efb1683b120499138f9e6021.tar.xz glibc-6e8a0aac2f883a23efb1683b120499138f9e6021.zip |
time: Fix overflow itimer tests on 32-bit systems
On the port of OpenRISC I am working on and it appears the rv32 port we have sets __TIMESIZE == 64 && __WORDSIZE == 32. This causes the size of time_t to be 8 bytes, but the tv_sec in the kernel is still 32-bit causing truncation. The truncations are unavoidable on these systems so skip the testing/failures by guarding with __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64. Also, futher in the tests and in other parts of code checking for time_t overflow does not work on 32-bit systems when time_t is 64-bit. As suggested by Adhemerval, update the in_time_t_range function to assume 32-bits by using int32_t. This also brings in the header for stdint.h so we can update other usages of __int32_t to int32_t as suggested by Adhemerval. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'include/time.h')
-rw-r--r-- | include/time.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/include/time.h b/include/time.h index 22b29ca583..127347eb90 100644 --- a/include/time.h +++ b/include/time.h @@ -11,6 +11,7 @@ # include <sys/time.h> # include <time-clockid.h> # include <sys/time.h> +# include <stdint.h> extern __typeof (strftime_l) __strftime_l; libc_hidden_proto (__strftime_l) @@ -342,11 +343,12 @@ libc_hidden_proto (__time64) actual clock ID. */ #define CLOCK_IDFIELD_SIZE 3 -/* Check whether T fits in time_t. */ +/* Check whether T fits in int32_t, assume all usages are for + sizeof(time_t) == 32. */ static inline bool in_time_t_range (__time64_t t) { - time_t s = t; + int32_t s = t; return s == t; } @@ -453,8 +455,8 @@ timespec64_to_timeval64 (const struct __timespec64 ts64) and suseconds_t. */ struct __timeval32 { - __int32_t tv_sec; /* Seconds. */ - __int32_t tv_usec; /* Microseconds. */ + int32_t tv_sec; /* Seconds. */ + int32_t tv_usec; /* Microseconds. */ }; /* Conversion functions for converting to/from __timeval32 */ |