Commit Graph

7 Commits

Author SHA1 Message Date
Artem Dergachev 73b38668ce [analyzer] InnerPointerChecker: Fix a segfault when checking symbolic strings.
Return value of dyn_cast_or_null should be checked before use.
Otherwise we may put a null pointer into the map as a key and eventually
crash in checkDeadSymbols.

Differential Revision: https://reviews.llvm.org/D51385

llvm-svn: 341092
2018-08-30 18:45:05 +00:00
Reka Kovacs bb2749a594 [analyzer] InnerPointerChecker: improve warning messages and notes.
Differential Revision: https://reviews.llvm.org/D49570

llvm-svn: 339489
2018-08-10 23:56:57 +00:00
Reka Kovacs bfd9cfdeeb [analyzer] Add test for a crash fixed in r338775.
Do not crash if a CXXRecordDecl cannot be obtained for an object.

Special thanks for the reproduction to Alexander Kornienko.

llvm-svn: 338918
2018-08-03 20:42:02 +00:00
Reka Kovacs 122171e235 [analyzer] Detect pointers escaped after ReturnStmt execution in MallocChecker.
Objects local to a function are destroyed right after the statement returning
(part of) them is executed in the analyzer. This patch enables MallocChecker to
warn in these cases.

Differential Revision: https://reviews.llvm.org/D49361

llvm-svn: 338780
2018-08-02 23:02:08 +00:00
Reka Kovacs bb1078ad85 [analyzer] Move InnerPointerChecker out of alpha.
Differential Revision: https://reviews.llvm.org/D49058

llvm-svn: 338433
2018-07-31 20:27:11 +00:00
Reka Kovacs c74cfc4215 [analyzer] Add support for more invalidating functions in InnerPointerChecker.
According to the standard, pointers referring to the elements of a
`basic_string` may be invalidated if they are used as an argument to
any standard library function taking a reference to non-const
`basic_string` as an argument. This patch makes InnerPointerChecker warn
for these cases.

Differential Revision: https://reviews.llvm.org/D49656

llvm-svn: 338259
2018-07-30 15:43:45 +00:00
Reka Kovacs 88ad704b5b [analyzer] Rename DanglingInternalBufferChecker to InnerPointerChecker.
Differential Revision: https://reviews.llvm.org/D49553

llvm-svn: 337559
2018-07-20 15:14:49 +00:00