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d0b0ac182d
An invalid substitution like ${var@} does not cause a parse error but is
stored in the intermediate representation, to be written as part of the
error message. If there is a CTL* byte in the stored part, this confuses
some code such as the code to skip an unused alternative such as in
${var-alternative}.
To keep things simple, do not store CTL* bytes.
Found with afl-fuzz.
MFC after: 1 week
4 lines
52 B
Text
4 lines
52 B
Text
# $FreeBSD$
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v=1
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eval ": $(printf '${v-${w\372}}')"
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