UBSAN report for main [so: 14] /usr/bin/whatis: non-zero (48) and zero offsets from null pointer in qsort.c

Reply: Stefan Esser : "Re: UBSAN report for main [so: 14] /usr/bin/whatis: non-zero (48) and zero offsets from null pointer in qsort.c"
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From: Mark Millard <marklmi_at_yahoo.com>
Date: Tue, 11 Jan 2022 07:40:43 UTC

# whatis dog
/usr/main-src/lib/libc/stdlib/qsort.c:114:23: runtime error: applying non-zero offset 48 to null pointer
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /usr/main-src/lib/libc/stdlib/qsort.c:114:23 in 
/usr/main-src/lib/libc/stdlib/qsort.c:114:44: runtime error: applying zero offset to null pointer
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /usr/main-src/lib/libc/stdlib/qsort.c:114:44 in 
whatis: nothing appropriate

This seems to be only for the not-found case.

===
Mark Millard
marklmi at yahoo.com