diff options
Diffstat (limited to 'toolchain/musl/patches/033-fix-undefined-behavior-in-sched.h-cpu_set_t-usage.patch')
| -rw-r--r-- | toolchain/musl/patches/033-fix-undefined-behavior-in-sched.h-cpu_set_t-usage.patch | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/toolchain/musl/patches/033-fix-undefined-behavior-in-sched.h-cpu_set_t-usage.patch b/toolchain/musl/patches/033-fix-undefined-behavior-in-sched.h-cpu_set_t-usage.patch deleted file mode 100644 index c634d59e4b..0000000000 --- a/toolchain/musl/patches/033-fix-undefined-behavior-in-sched.h-cpu_set_t-usage.patch +++ /dev/null @@ -1,43 +0,0 @@ -From 66570ec9c465e3c6c5d6dbd7dd42e45041a39288 Mon Sep 17 00:00:00 2001 -From: Rich Felker <dalias@aerifal.cx> -Date: Mon, 19 Sep 2016 11:15:51 -0400 -Subject: fix undefined behavior in sched.h cpu_set_t usage - -since cpu sets can be dynamically allocated and have variable size, -accessing their contents via ->__bits is not valid; performing pointer -arithmetic outside the range of the size of the declared __bits array -results in undefined beahavior. instead, only use cpu_set_t for -fixed-size cpu set objects (instantiated by the caller) and as an -abstract pointer type for dynamically allocated ones. perform all -accesses simply by casting the abstract pointer type cpuset_t * back -to unsigned long *. ---- - include/sched.h | 6 +++--- - 1 file changed, 3 insertions(+), 3 deletions(-) - -diff --git a/include/sched.h b/include/sched.h -index af82d6c..d1cccb7 100644 ---- a/include/sched.h -+++ b/include/sched.h -@@ -82,7 +82,7 @@ int sched_getaffinity(pid_t, size_t, cpu_set_t *); - int sched_setaffinity(pid_t, size_t, const cpu_set_t *); - - #define __CPU_op_S(i, size, set, op) ( (i)/8U >= (size) ? 0 : \ -- ((set)->__bits[(i)/8/sizeof(long)] op (1UL<<((i)%(8*sizeof(long))))) ) -+ (((unsigned long *)(set))[(i)/8/sizeof(long)] op (1UL<<((i)%(8*sizeof(long))))) ) - - #define CPU_SET_S(i, size, set) __CPU_op_S(i, size, set, |=) - #define CPU_CLR_S(i, size, set) __CPU_op_S(i, size, set, &=~) -@@ -94,8 +94,8 @@ static __inline void __CPU_##func##_S(size_t __size, cpu_set_t *__dest, \ - { \ - size_t __i; \ - for (__i=0; __i<__size/sizeof(long); __i++) \ -- __dest->__bits[__i] = __src1->__bits[__i] \ -- op __src2->__bits[__i] ; \ -+ ((unsigned long *)__dest)[__i] = ((unsigned long *)__src1)[__i] \ -+ op ((unsigned long *)__src2)[__i] ; \ - } - - __CPU_op_func_S(AND, &) --- -cgit v0.11.2 |