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Fix interpolation/STRFMT overflow issues (#838)

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Widths and fractional widths greater than 255 would overflow a
uint8_t and wrap around to smaller values.

Total formatted lengths greater than the avilable buffer size
would overflow it and potentially corrupt memory.

Fixes #830
Closes #831
This commit is contained in:
Rangi
2021-04-17 00:52:55 -04:00
committed by GitHub
parent 503c3b5364
commit ee5da4468d
9 changed files with 122 additions and 36 deletions
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src/asm/rgbasm.5
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@@ -337,7 +337,7 @@ followed by one or more
\[en]
.Ql 9 .
If specified, prints this many digits of a fixed-point fraction.
Defaults to 5 digits.
Defaults to 5 digits, maximum 255 digits.
.It Ql <type> Ta Specifies the type of value.
.El
.Pp