diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backtrace.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/backtrace.c b/src/backtrace.c index 77906e843..6092aaf86 100644 --- a/src/backtrace.c +++ b/src/backtrace.c @@ -32,7 +32,7 @@ get_backtrace_i(mrb_state *mrb, void *stream, int level, const char *format, ... { va_list ap; mrb_value ary, str; - int len, ai; + int ai; if (level > 0) { return; @@ -40,12 +40,17 @@ get_backtrace_i(mrb_state *mrb, void *stream, int level, const char *format, ... ai = mrb_gc_arena_save(mrb); ary = mrb_obj_value((struct RArray*)stream); + va_start(ap, format); - len = vsnprintf(NULL, 0, format, ap); - str = mrb_str_new(mrb, 0, len); - vsnprintf(RSTRING_PTR(str), len, format, ap); - mrb_ary_push(mrb, ary, str); + str = mrb_str_new(mrb, 0, vsnprintf(NULL, 0, format, ap) + 1); va_end(ap); + + va_start(ap, format); + vsnprintf(RSTRING_PTR(str), RSTRING_LEN(str), format, ap); + va_end(ap); + + mrb_str_resize(mrb, str, RSTRING_LEN(str) - 1); + mrb_ary_push(mrb, ary, str); mrb_gc_arena_restore(mrb, ai); } |