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backtrace.c: do not print trace line if there's no backtrace history

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2021-05-27 21:44:55 +09:00
parent 48b08fecba
commit cb92f9ce0b
1 changed files with 3 additions and 1 deletions
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src/backtrace.c
+3 -1
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@@ -102,7 +102,9 @@ print_backtrace(mrb_state *mrb, struct RObject *exc, mrb_value backtrace)
FILE *stream = stderr;
if (n != 0) {
fprintf(stream, "trace (most recent call last):\n");
if (n > 1) {
fprintf(stream, "trace (most recent call last):\n");
}
for (i=n-1,loc=&RARRAY_PTR(backtrace)[i]; i>0; i--,loc--) {
if (mrb_string_p(*loc)) {
fprintf(stream, "\t[%d] %.*s\n",