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Check return value from snprintf(); ref #3498
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matz committed Mar 11, 2017
1 parent f9ed15d commit e392231
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3 changes: 3 additions & 0 deletions mrbgems/mruby-sprintf/src/sprintf.c
Expand Up @@ -1087,6 +1087,9 @@ mrb_str_format(mrb_state *mrb, int argc, const mrb_value *argv, mrb_value fmt)

CHECK(need);
n = snprintf(&buf[blen], need, fbuf, fval);
if (n < 0) {
mrb_raise(mrb, E_RUNTIME_ERROR, "formatting error");
}
blen += n;
}
break;
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