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* PR25890: Fix incoherent error handling in PerformImplicitConversion andRichard Smith2016-10-061-2/+2
| | | | | | | | | | | | CheckSingleAssignmentConstraints. These no longer produce ExprError() when they have not emitted an error, and reliably inform the caller when they *have* emitted an error. This fixes some serious issues where we would fail to emit any diagnostic for invalid code and then attempt to emit code for an invalid AST, and conversely some issues where we would emit two diagnostics for the same problem. llvm-svn: 283508
* PR6037Nathan Sidwell2015-01-191-2/+2
| | | | | | Warn on inaccessible direct base llvm-svn: 226423
* Improve diagnostics when we fail to convert from a source type to aDouglas Gregor2010-04-091-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* When pretty-printing tag types, only print the tag if we're in C (andJohn McCall2010-03-101-2/+2
| | | | | | | | | | therefore not creating ElaboratedTypes, which are still pretty-printed with the written tag). Most of these testcase changes were done by script, so don't feel too sorry for my fingers. llvm-svn: 98149
* Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'.Daniel Dunbar2009-12-151-1/+1
| | | | | | | | | - This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446
* Rename clang to clang-cc.Daniel Dunbar2009-03-241-1/+1
| | | | | | Tests and drivers updated, still need to shuffle dirs. llvm-svn: 67602
* First non-embarrassing cut at checking for ambiguous derived-to-base Douglas Gregor2008-10-241-0/+33
conversions. Added PerformImplicitConversion, which follows an implicit conversion sequence computed by TryCopyInitialization and actually performs the implicit conversions, including the extra check for ambiguity mentioned above. llvm-svn: 58071
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