35e6fee3e9
Sema: Reject templates in all extern "C" contexts.
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Otherwise we'd accept them if the LinkageDecl was not the direct
parent DeclContext. PR17968.
llvm-svn: 200641
2014-02-02 16:35:43 +00:00
1f490f3aea
report unused-value warning also for warn_unused types
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llvm-svn: 186793
2013-07-21 13:15:58 +00:00
c11535c248
Add a warning to diagnose statements in C++ like "*(volatile int*)x;". Conceptually, this is part of -Wunused-value, but I added a separate flag -Wunused-volatile-lvalue so it doesn't get turned off by accident with -Wno-unused-value. I also made a few minor improvements to existing unused value warnings in the process. <rdar://problem/11516811>.
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llvm-svn: 157362
2012-05-24 00:47:05 +00:00
fcd5e7a160
When emitting a diagnostic about two-phase name lookup, don't do useless
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qualified name lookups into transparent contexts.
llvm-svn: 152739
2012-03-14 20:41:00 +00:00
dcaacaa190
Fix a QoI bug with overloaded operators inside macros.
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We were failing to set source locations and ranges in isUnusedResultAWarning
for CXXOperatorCallExprs, leading to an "expression result unused" warning
with absolutely no context if the expression was inside a macro.
llvm-svn: 140036
2011-09-19 18:51:20 +00:00
c493a73240
Improve the unused-value check to look into comma expressions and filter out
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voids in sub-expressions. Patch by Mike M!
Fixes PR4806.
llvm-svn: 98335
2010-03-12 07:11:26 +00:00
Benjamin Kramer