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PP: Fix issue #408: # as last character in macro.

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This would look ahead for a second #, for token pasting, and if not
found, backup one token.  This is fine, unless at the end of line,
which would backup the #, rather than the look ahead.
This commit is contained in:
John Kessenich 2016-07-30 12:38:17 -06:00
parent 50d4fbe4c7
commit 73d4fb5bc5
5 changed files with 35 additions and 9 deletions
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19
glslang/MachineIndependent/preprocessor/PpTokens.cpp
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@ -180,14 +180,17 @@ int TPpContext::ReadToken(TokenStream *pTok, TPpToken *ppToken)
ltoken += 128;
switch (ltoken) {
case '#':
if (lReadByte(pTok) == '#') {
parseContext.requireProfile(ppToken->loc, ~EEsProfile, "token pasting (##)");
parseContext.profileRequires(ppToken->loc, ~EEsProfile, 130, 0, "token pasting (##)");
parseContext.error(ppToken->loc, "token pasting not implemented (internal error)", "##", "");
//return PpAtomPaste;
return ReadToken(pTok, ppToken);
} else
lUnreadByte(pTok);
// Check for ##, unless the current # is the last character
if (pTok->current < pTok->data.size()) {
if (lReadByte(pTok) == '#') {
parseContext.requireProfile(ppToken->loc, ~EEsProfile, "token pasting (##)");
parseContext.profileRequires(ppToken->loc, ~EEsProfile, 130, 0, "token pasting (##)");
parseContext.error(ppToken->loc, "token pasting not implemented (internal error)", "##", "");
//return PpAtomPaste;
return ReadToken(pTok, ppToken);
} else
lUnreadByte(pTok);
}
break;
case PpAtomConstString:
case PpAtomIdentifier: