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Only accept non-negative lyxscale parameters

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Since lyxscale is unsigned, a negative value would lead to a very
large positive value.

Spotted by coverity.
This commit is contained in:
Jean-Marc Lasgouttes 2017-03-13 18:16:27 +01:00
parent 50060053e3
commit 7d4b8b7606
1 changed files with 9 additions and 5 deletions
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14
src/insets/InsetExternal.cpp
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@ -289,17 +289,23 @@ bool InsetExternalParams::read(Buffer const & buffer, Lexer & lex)
filename = buffer.getReferencedFileName(name);
break;
}
case EX_DISPLAY: {
lex.next();
display = lex.getString() != "false";
break;
}
case EX_LYXSCALE:
case EX_LYXSCALE: {
lex.next();
lyxscale = lex.getInteger();
int const ls = lex.getInteger();
// negative values are not accepted.
if (ls >= 0)
lyxscale = ls;
else
lex.printError("ExternalInset::read: Wrong lyxscale: $$Token");
break;
}
case EX_DRAFT:
draft = true;
@ -379,8 +385,6 @@ bool InsetExternalParams::read(Buffer const & buffer, Lexer & lex)
if (lyxerr.debugging(Debug::EXTERNAL)) {
lyxerr << "InsetExternalParams::read:\n";
// false positive
// coverity[NEGATIVE_RETURNS]
write(buffer, lyxerr);
}