Commit Graph

3 Commits

Author SHA1 Message Date
Valeriy Savchenko bd06c417e6 [analyzer] Allow bindings of the CompoundLiteralRegion
Summary:
CompoundLiteralRegions have been properly modeled before, but
'getBindingForElement` was not changed to accommodate this change
properly.

rdar://problem/46144644

Differential Revision: https://reviews.llvm.org/D78990
2020-05-28 14:11:57 +03:00
Eli Friedman 88fccbdea7 [Sema] Mark GNU compound literal array init as an rvalue.
Basically the same issue as string init, except it didn't really have
any visible consequences before I removed the implicit lvalue-to-rvalue
conversion from CodeGen.

While I'm here, a couple minor drive-by cleanups: IgnoreParens never
returns a ConstantExpr, and there was a potential crash with string init
involving a ChooseExpr.

The analyzer test change maybe indicates we could simplify the analyzer
code a little with this fix?  Apparently a hack was added to support
lvalues in initializers in r315750, but I'm not really familiar with the
relevant code.

Fixes regression reported in the kernel build at
https://bugs.llvm.org/show_bug.cgi?id=40430#c6 .

Differential Revision: https://reviews.llvm.org/D58069

llvm-svn: 353762
2019-02-11 22:54:27 +00:00
Artem Dergachev cd25c38dc0 [analyzer] pr28449: Fix support for various array initializers.
In some cases the analyzer didn't expect an array-type variable to be
initialized with anything other than a string literal. The patch essentially
removes the assertion, and ensures relatively sane behavior.

There is a bigger problem with these initializers. Currently our memory model
(RegionStore) is being ordered to initialize the array with a region that
is assumed to be storing the initializer rvalue, and it guesses to copy
the contents of that region to the array variable. However, it would make
more sense for RegionStore to receive the correct initializer in the first
place. This problem isn't addressed with this patch.

rdar://problem/27248428
Differential Revision: https://reviews.llvm.org/D23963

llvm-svn: 315750
2017-10-13 20:54:56 +00:00