Nico Weber
758fbacea5
Teach Wreturn-type, Wunreachable-code, and alpha.deadcode.UnreachableCode to treat __assume(0) like __builtin_unreachable.
...
Fixes PR29134.
https://reviews.llvm.org/D43221
llvm-svn: 325052
2018-02-13 21:31:47 +00:00
Daniel Marjamaki
fabe840e75
[StaticAnalyzer] Fix false positives for unreachable code in macros.
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Example:
#define MACRO(C) if (C) { static int x; .. }
void foo() {
MACRO(0);
}
Differential Revision: https://reviews.llvm.org/D36141
llvm-svn: 309799
2017-08-02 08:26:56 +00:00
Dominic Chen
184c6242fa
Reland 4: [analyzer] NFC: Update test infrastructure to support multiple constraint managers
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Summary: Replace calls to %clang/%clang_cc1 with %clang_analyze_cc1 when invoking static analyzer, and perform runtime substitution to select the appropriate constraint manager, per D28952.
Reviewers: xazax.hun, NoQ, zaks.anna, dcoughlin
Subscribers: mgorny, rgov, mikhail.ramalho, a.sidorin, cfe-commits
Differential Revision: https://reviews.llvm.org/D30373
llvm-svn: 296895
2017-03-03 18:02:02 +00:00
Dominic Chen
09d66f7528
Revert "Reland 3: [analyzer] NFC: Update test infrastructure to support multiple constraint managers"
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This reverts commit ea36f1406e1f36bf456c3f3929839b024128e468.
llvm-svn: 296841
2017-03-02 23:30:53 +00:00
Dominic Chen
feaf9ff5ee
Reland 3: [analyzer] NFC: Update test infrastructure to support multiple constraint managers
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Summary: Replace calls to %clang/%clang_cc1 with %clang_analyze_cc1 when invoking static analyzer, and perform runtime substitution to select the appropriate constraint manager, per D28952.
Reviewers: xazax.hun, NoQ, zaks.anna, dcoughlin
Subscribers: mgorny, rgov, mikhail.ramalho, a.sidorin, cfe-commits
Differential Revision: https://reviews.llvm.org/D30373
llvm-svn: 296837
2017-03-02 23:05:45 +00:00
Dominic Chen
4a90bf8c3f
Revert "Reland 2: [analyzer] NFC: Update test infrastructure to support multiple constraint managers"
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This reverts commit f93343c099fff646a2314cc7f4925833708298b1.
llvm-svn: 296836
2017-03-02 22:58:06 +00:00
Dominic Chen
1cb0256a3c
Reland 2: [analyzer] NFC: Update test infrastructure to support multiple constraint managers
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Summary: Replace calls to %clang/%clang_cc1 with %clang_analyze_cc1 when invoking static analyzer, and perform runtime substitution to select the appropriate constraint manager, per D28952.
Reviewers: xazax.hun, NoQ, zaks.anna, dcoughlin
Subscribers: mgorny, rgov, mikhail.ramalho, a.sidorin, cfe-commits
Differential Revision: https://reviews.llvm.org/D30373
llvm-svn: 296835
2017-03-02 22:45:24 +00:00
Dominic Chen
00355a51d0
Revert "Reland: [analyzer] NFC: Update test infrastructure to support multiple constraint managers"
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This reverts commit 1b28d0b10e1c8feccb971abb6ef7a18bee589830.
llvm-svn: 296422
2017-02-28 01:50:23 +00:00
Dominic Chen
59cd893320
Reland: [analyzer] NFC: Update test infrastructure to support multiple constraint managers
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Summary: Replace calls to %clang/%clang_cc1 with %clang_analyze_cc1 when invoking static analyzer, and perform runtime substitution to select the appropriate constraint manager, per D28952.
Reviewers: xazax.hun, NoQ, zaks.anna, dcoughlin
Subscribers: mgorny, rgov, mikhail.ramalho, a.sidorin, cfe-commits
Differential Revision: https://reviews.llvm.org/D30373
llvm-svn: 296414
2017-02-28 00:02:36 +00:00
Dominic Chen
8589e10c30
Revert "[analyzer] NFC: Update test infrastructure to support multiple constraint managers"
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This reverts commit 8e7780b9e59ddaad1800baf533058d2c064d4787.
llvm-svn: 296317
2017-02-27 03:29:25 +00:00
Dominic Chen
02064a3076
[analyzer] NFC: Update test infrastructure to support multiple constraint managers
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Summary: Replace calls to %clang/%clang_cc1 with %clang_analyze_cc1 when invoking static analyzer, and perform runtime substitution to select the appropriate constraint manager, per D28952.
Reviewers: xazax.hun, NoQ, zaks.anna, dcoughlin
Subscribers: mgorny, rgov, mikhail.ramalho, a.sidorin, cfe-commits
Differential Revision: https://reviews.llvm.org/D30373
llvm-svn: 296312
2017-02-27 02:36:15 +00:00
Daniel Marjamaki
fa1bf447d9
alpha.core.UnreachableCode - don't warn about unreachable code inside macro
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In macros, 'do {...} while (0)' is often used. Don't warn about the condition 0 when it is unreachable.
Differential Revision: https://reviews.llvm.org/D25606
llvm-svn: 284477
2016-10-18 13:16:53 +00:00
Daniel Marjamaki
d99ebc03f4
[analyzer] Don't merge different return nodes in ExplodedGraph
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Returns when calling an inline function should not be merged in the ExplodedGraph unless they are same.
Differential Revision: https://reviews.llvm.org/D25326
llvm-svn: 283554
2016-10-07 14:21:08 +00:00
Daniel Marjamaki
fd1b3814b3
[StaticAnalyser] Add test case to ensure that unreachable code is found.
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https://reviews.llvm.org/D24905
llvm-svn: 283096
2016-10-03 09:45:35 +00:00
Daniel Marjamaki
042a3c5a2d
[StaticAnalyzer] Fix UnreachableCode false positives.
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When there is 'do { } while (0);' in the code the ExplodedGraph and UnoptimizedCFG did not match.
Differential Revision: https://reviews.llvm.org/D24759
llvm-svn: 283095
2016-10-03 08:28:51 +00:00
Daniel Marjamaki
2593b402ce
[StaticAnalyzer] Fix false positives for vardecls that are technically unreachable but they are needed.
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Example:
switch (x) {
int a; // <- This is unreachable but needed
case 1:
a = ...
Differential Revision: https://reviews.llvm.org/D24905
llvm-svn: 282574
2016-09-28 10:39:53 +00:00
Jordan Rose
95cdf9d603
[analyzer] Don't run unreachable code checker on inlined functions.
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This is still an alpha checker, but we use it in certain tests to make sure
something is not being executed.
This should fix the buildbots.
llvm-svn: 188682
2013-08-19 17:03:12 +00:00
Ted Kremenek
722398f1d4
Fix analyzer tests.
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llvm-svn: 162588
2012-08-24 20:39:55 +00:00
Ted Kremenek
ef5c554df4
[analyzer] Tweak the UnreachableCode checker to not warning about unreachable default blocks. Patch by Cyril Roelandt!
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llvm-svn: 151709
2012-02-29 06:05:28 +00:00
Ted Kremenek
3f955e6d89
[analyzer] rename all experimental checker packages to have 'experimental' be the common root package.
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llvm-svn: 136835
2011-08-03 23:14:55 +00:00
Ted Kremenek
49c79790de
Rework checker "packages" and groups to be more hierarchical.
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llvm-svn: 128187
2011-03-24 00:28:47 +00:00
Ted Kremenek
a4a57c10da
Re-enable the IdempotentOperations checker for --analyze, and put it and the DeadStores checker into the "deadcode" group.
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llvm-svn: 127531
2011-03-12 06:14:28 +00:00
Argyrios Kyrtzidis
9eb02dfa89
[analyzer] Remove '-analyzer-check-objc-mem' flag, the nominee for best misnomer award.
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llvm-svn: 126676
2011-02-28 19:49:42 +00:00
Argyrios Kyrtzidis
2c49ec7f1d
[analyzer] Migrate NSErrorChecker and DereferenceChecker to CheckerV2.
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They cooperate in that NSErrorChecker listens for ImplicitNullDerefEvent events that
DereferenceChecker can dispatch.
ImplicitNullDerefEvent is when we dereferenced a location that may be null.
llvm-svn: 126659
2011-02-28 17:36:18 +00:00
Argyrios Kyrtzidis
3e7ab19863
[analyzer] Move the DeadStores checker out of the 'core' package.
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-Now it gets enabled with '-analyzer-checker=DeadStores'.
-The driver passes the above flag by default.
llvm-svn: 126612
2011-02-28 01:27:12 +00:00
Argyrios Kyrtzidis
c08d89e6c2
Allow passing a list of comma separated checker names to -analyzer-checker, e.g:
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-analyzer-checker=cocoa,unix
llvm-svn: 126372
2011-02-24 08:42:20 +00:00
Argyrios Kyrtzidis
af45aca670
[analyzer] Use the new registration mechanism on the non-path-sensitive-checkers:
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DeadStoresChecker
ObjCMethSigsChecker
ObjCUnusedIvarsChecker
SizeofPointerChecker
ObjCDeallocChecker
SecuritySyntaxChecker
llvm-svn: 125779
2011-02-17 21:39:33 +00:00
Argyrios Kyrtzidis
2d3905ffac
[analyzer] Use the new registration mechanism on some of the experimental checks. These are:
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CStringChecker
ChrootChecker
MallocChecker
PthreadLockChecker
StreamChecker
UnreachableCodeChecker
MallocChecker creates implicit dependencies between checkers and needs to be handled differently.
llvm-svn: 125598
2011-02-15 21:25:03 +00:00
Ted Kremenek
9865d7f0e6
Don't report dead stores on unreachable code paths. Fixes <rdar://problem/8405222>.
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llvm-svn: 125415
2011-02-11 23:24:26 +00:00
Tom Care
ea53e82c78
UnreachableCodeChecker cleanup and improvements
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- Fixed some iterator style issues
- Don't process blocks that have been visited already
- Fixed a case where a unreachable block cycle was not reported
- Minor test case changes
- Added one test case from flow-sensitive version of the check. More coming.
llvm-svn: 115861
2010-10-06 23:02:25 +00:00
Tom Care
16ba7c652e
Fixed logic error in UnreachableCodeChecker's marking algorithm that would sometimes allow for multiple sequential statements to be flagged.
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llvm-svn: 110353
2010-08-05 17:53:44 +00:00
Tom Care
29a6250bf0
Added some false positive checking to UnreachableCodeChecker
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- Allowed reporting of dead macros
- Added path walking function to search for false positives in conditional statements
- Updated some affected tests
- Added some false positive test cases
llvm-svn: 109561
2010-07-27 23:30:21 +00:00
Jordy Rose
55442abee6
Don't warn about unreachable code if the block starts with __builtin_unreachable().
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The next step is to warn if a block labeled unreachable is, in fact, reachable. Somewhat related to PR810.
llvm-svn: 109487
2010-07-27 03:39:53 +00:00
Tom Care
cba9f517ac
Added an path-sensitive unreachable code checker to the experimental analyzer checks.
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- Created a new class to do post-analysis
- Updated several test cases with unreachable code to expect a warning
- Added some general tests
llvm-svn: 109286
2010-07-23 23:04:53 +00:00