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Crash in check_pos_arg #3355

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clayton-shopify opened this Issue Dec 19, 2016 · 0 comments

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clayton-shopify commented Dec 19, 2016

The following input causes a crash:

'%a%1$' % 0

I believe the bug may be here, where an argument to mrb_raisef seems to be missing:

mruby/mrbgems/mruby-sprintf/src/sprintf.c

Line 158 in 4325707

    
           mrb_raisef(mrb, E_ARGUMENT_ERROR, "numbered(%S) after unnumbered(%S)", mrb_fixnum_value(n));

This issue was reported by https://hackerone.com/mg36

matz closed this in `5e3077c` Dec 21, 2016

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