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3 Commits

Author SHA1 Message Date
Daniel Marjamaki
d3d83681bc [Analyzer] Clarify error messages for undefined result 
Differential Revision: https://reviews.llvm.org/D30295

llvm-svn: 315462
 2017-10-11 14:49:35 +00:00
Daniel Marjamaki
2641a52ee4 [analyzer] alpha.core.Conversion - Fix false positive for 'U32 += S16;' expression, that is not unsafe 
Summary:
The alpha.core.Conversion was too strict about compound assignments and could warn even though there is no problem.

Differential Revision: https://reviews.llvm.org/D25596

llvm-svn: 299523
 2017-04-05 08:57:04 +00:00
Artem Dergachev
002981baca [analyzer] Add a checker for loss of sign or precision in integral casts. 
This new checker tries to find execution paths on which implicit integral casts
cause definite loss of information: a certainly-negative integer is converted
to an unsigned integer, or an integer is definitely truncated to fit into
a smaller type.

Being implicit, such casts are likely to produce unexpected results.

Patch by Daniel Marjamäki!

Differential Revision: https://reviews.llvm.org/D13126

llvm-svn: 278941
 2016-08-17 16:02:45 +00:00