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eval_error.c: enrich backtrace

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* eval_error.c (print_backtrace): add frame number when printing
  in reverse order.  [Feature #8661]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58786 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-05-19 07:12:45 +00:00
parent 5b58d8e6d8
commit 87023a1dcc
1 changed files with 9 additions and 2 deletions
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11
eval_error.c
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@ -137,6 +137,11 @@ print_backtrace(const VALUE eclass, const VALUE errat, int reverse)
long i;
long len = RARRAY_LEN(errat);
int skip = eclass == rb_eSysStackError;
const int threshold = 1000000000;
int width = ((int)log10((double)(len > threshold ?
((len - 1) / threshold) :
len - 1)) +
(len < ? 0 : 9) + 1);
#define TRACE_MAX (TRACE_HEAD+TRACE_TAIL+5)
#define TRACE_HEAD 8
@ -145,7 +150,9 @@ print_backtrace(const VALUE eclass, const VALUE errat, int reverse)
for (i = 1; i < len; i++) {
VALUE line = RARRAY_AREF(errat, reverse ? len - i : i);
if (RB_TYPE_P(line, T_STRING)) {
warn_print_str(rb_sprintf("\tfrom %"PRIsVALUE"\n", line));
VALUE str = rb_str_new_cstr("\t");
if (reverse) rb_str_catf(str, "%*ld: ", width, len - i);
warn_print_str(rb_str_catf(str, "from %"PRIsVALUE"\n", line));
}
if (skip && i == TRACE_HEAD && len > TRACE_MAX) {
warn_print_str(rb_sprintf("\t ... %ld levels...\n",
@ -185,7 +192,7 @@ rb_threadptr_error_print(rb_thread_t *volatile th, volatile VALUE errinfo)
}
}
if (rb_stderr_tty_p()) {
if (0) warn_print("Traceback (most recent call last):\n");
warn_print("Traceback (most recent call last):\n");
print_backtrace(eclass, errat, TRUE);
print_errinfo(eclass, errat, emesg);
}