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unwind: fix a bug in range updating of binary search

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* unwind.c (print_stacktrace): Fix another off-by-one error in binary search.
This commit is contained in:
Дмитрий Левин 2014-06-05 21:40:43 +00:00
parent c903c822ee
commit c12eb1117c
1 changed files with 3 additions and 3 deletions
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6
unwind.c
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@ -291,7 +291,7 @@ stacktrace_walk(struct tcb *tcp,
unw_word_t function_off_set;
int stack_depth = 0, ret_val;
/* these are used for the binary search through the mmap_chace */
unsigned int lower, upper, mid;
int lower, upper, mid;
size_t symbol_name_size = 40;
char * symbol_name;
struct mmap_cache_t* cur_mmap_cache;
@ -318,7 +318,7 @@ stacktrace_walk(struct tcb *tcp,
}
lower = 0;
upper = tcp->mmap_cache_size - 1;
upper = (int) tcp->mmap_cache_size - 1;
while (lower <= upper) {
/* find the mmap_cache and print the stack frame */
@ -371,7 +371,7 @@ stacktrace_walk(struct tcb *tcp,
goto ret;
}
else if (ip < cur_mmap_cache->start_addr)
upper = mid;
upper = mid - 1;
else
lower = mid + 1;