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* Improve the Objective-C common-type computation used by the ternary operator.Douglas Gregor2015-07-071-1/+1
| | | | | | | | | | | | | | | | The Objective-C common-type computation had a few problems that required a significant rework, including: - Quadradic behavior when finding the common base type; now it's linear. - Keeping around type arguments when computing the common type between a specialized and an unspecialized type - Introducing redundant protocol qualifiers. Part of rdar://problem/6294649. Also fixes rdar://problem/19572837 by addressing a longstanding bug in ASTContext::CollectInheritedProtocols(). llvm-svn: 241544
* Improve diagnostics when we fail to convert from a source type to aDouglas Gregor2010-04-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | destination type for initialization, assignment, parameter-passing, etc. The main issue fixed here is that we used rather confusing wording for diagnostics such as t.c:2:9: warning: initializing 'char const [2]' discards qualifiers, expected 'char *' [-pedantic] char *name = __func__; ^ ~~~~~~~~ We're not initializing a 'char const [2]', we're initializing a 'char *' with an expression of type 'char const [2]'. Similar problems existed for other diagnostics in this area, so I've normalized them all with more precise descriptive text to say what we're initializing/converting/assigning/etc. from and to. The warning for the code above is now: t.c:2:9: warning: initializing 'char *' from an expression of type 'char const [2]' discards qualifiers [-pedantic] char *name = __func__; ^ ~~~~~~~~ Fixes <rdar://problem/7447179>. llvm-svn: 100832
* Patch to fix a warning which exposed a bug in buildingFariborz Jahanian2010-02-121-0/+55
a qualified objective-c pointer type. Fixes radar 7638810. (Also removes a FIXME). llvm-svn: 96003
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