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Fix possible heap corruption when converting to NSNonLossyASCIIStringEncoding.

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This commit is contained in:
Frederik Seiffert 2021-07-02 17:48:34 +02:00 • committed by Frederik Seiffert
parent a4f30a33cf
commit 47ed291b80
2 changed files with 18 additions and 2 deletions
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14
Source/Additions/Unicode.m
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@ -2242,12 +2242,22 @@ GSFromUnicode(unsigned char **dst, unsigned int *size, const unichar *src,
}
else
{
dpos += sprintf((char*)&ptr[dpos], "\\%03o", u);
char octchars[] = "01234567";
ptr[dpos++] = '\\';
ptr[dpos++] = octchars[(u >> 6) & 7];
ptr[dpos++] = octchars[(u >> 3) & 7];
ptr[dpos++] = octchars[u & 7];
}
}
else
{
dpos += sprintf((char*)&ptr[dpos], "\\u%04x", u);
char hexchars[] = "0123456789abcdef";
ptr[dpos++] = '\\';
ptr[dpos++] = 'u';
ptr[dpos++] = hexchars[(u >> 12) & 0xF];
ptr[dpos++] = hexchars[(u >> 8) & 0xF];
ptr[dpos++] = hexchars[(u >> 4) & 0xF];
ptr[dpos++] = hexchars[u & 0xF];
}
}
}