r183358 - [analyzer; new edges] Don't crash if the top-level entry edge is missing.
Jordan Rose
jordan_rose at apple.com
Wed Jun 5 17:12:41 PDT 2013
Author: jrose
Date: Wed Jun 5 19:12:41 2013
New Revision: 183358
URL: http://llvm.org/viewvc/llvm-project?rev=183358&view=rev
Log:
[analyzer; new edges] Don't crash if the top-level entry edge is missing.
We previously asserted that there was a top-level function entry edge, but
if the function decl's location is invalid (or within a macro) this edge
might not exist. Change the assertion to an actual check, and don't drop
the first path piece if it doesn't match.
<rdar://problem/14070304>
Modified:
cfe/trunk/lib/StaticAnalyzer/Core/BugReporter.cpp
cfe/trunk/test/Analysis/edges-new.mm
Modified: cfe/trunk/lib/StaticAnalyzer/Core/BugReporter.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/StaticAnalyzer/Core/BugReporter.cpp?rev=183358&r1=183357&r2=183358&view=diff
==============================================================================
--- cfe/trunk/lib/StaticAnalyzer/Core/BugReporter.cpp (original)
+++ cfe/trunk/lib/StaticAnalyzer/Core/BugReporter.cpp Wed Jun 5 19:12:41 2013
@@ -2480,17 +2480,23 @@ static bool optimizeEdges(PathPieces &pa
}
/// Drop the very first edge in a path, which should be a function entry edge.
+///
+/// If the first edge is not a function entry edge (say, because the first
+/// statement had an invalid source location), this function does nothing.
+// FIXME: We should just generate invalid edges anyway and have the optimizer
+// deal with them.
static void dropFunctionEntryEdge(PathPieces &Path,
LocationContextMap &LCM,
SourceManager &SM) {
-#ifndef NDEBUG
- const Decl *D = LCM[&Path]->getDecl();
- PathDiagnosticLocation EntryLoc =
- PathDiagnosticLocation::createBegin(D, SM);
const PathDiagnosticControlFlowPiece *FirstEdge =
- cast<PathDiagnosticControlFlowPiece>(Path.front());
- assert(FirstEdge->getStartLocation() == EntryLoc && "not an entry edge");
-#endif
+ dyn_cast<PathDiagnosticControlFlowPiece>(Path.front());
+ if (!FirstEdge)
+ return;
+
+ const Decl *D = LCM[&Path]->getDecl();
+ PathDiagnosticLocation EntryLoc = PathDiagnosticLocation::createBegin(D, SM);
+ if (FirstEdge->getStartLocation() != EntryLoc)
+ return;
Path.pop_front();
}
Modified: cfe/trunk/test/Analysis/edges-new.mm
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/edges-new.mm?rev=183358&r1=183357&r2=183358&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/edges-new.mm (original)
+++ cfe/trunk/test/Analysis/edges-new.mm Wed Jun 5 19:12:41 2013
@@ -543,6 +543,12 @@ void longLines() {
[garply release];
}
+#define POINTER(T) T*
+POINTER(void) testMacroInFunctionDecl(void *q) {
+ int *p = 0;
+ *p = 1;
+ return q;
+}
// CHECK: <key>diagnostics</key>
// CHECK-NEXT: <array>
@@ -13505,4 +13511,181 @@ void longLines() {
// CHECK-NEXT: <key>file</key><integer>0</integer>
// CHECK-NEXT: </dict>
// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>path</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>control</string>
+// CHECK-NEXT: <key>edges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>start</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>548</integer>
+// CHECK-NEXT: <key>col</key><integer>12</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>548</integer>
+// CHECK-NEXT: <key>col</key><integer>12</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>end</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>548</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>548</integer>
+// CHECK-NEXT: <key>col</key><integer>5</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>548</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <key>ranges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>548</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>548</integer>
+// CHECK-NEXT: <key>col</key><integer>8</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>depth</key><integer>0</integer>
+// CHECK-NEXT: <key>extended_message</key>
+// CHECK-NEXT: <string>'p' initialized to a null pointer value</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>'p' initialized to a null pointer value</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>control</string>
+// CHECK-NEXT: <key>edges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>start</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>548</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>548</integer>
+// CHECK-NEXT: <key>col</key><integer>5</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>end</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>549</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>549</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>control</string>
+// CHECK-NEXT: <key>edges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>start</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>549</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>549</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>end</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>549</integer>
+// CHECK-NEXT: <key>col</key><integer>6</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>549</integer>
+// CHECK-NEXT: <key>col</key><integer>6</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>549</integer>
+// CHECK-NEXT: <key>col</key><integer>6</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <key>ranges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>549</integer>
+// CHECK-NEXT: <key>col</key><integer>4</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>549</integer>
+// CHECK-NEXT: <key>col</key><integer>4</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>depth</key><integer>0</integer>
+// CHECK-NEXT: <key>extended_message</key>
+// CHECK-NEXT: <string>Dereference of null pointer (loaded from variable 'p')</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Dereference of null pointer (loaded from variable 'p')</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>description</key><string>Dereference of null pointer (loaded from variable 'p')</string>
+// CHECK-NEXT: <key>category</key><string>Logic error</string>
+// CHECK-NEXT: <key>type</key><string>Dereference of null pointer</string>
+// CHECK-NEXT: <key>issue_context_kind</key><string>function</string>
+// CHECK-NEXT: <key>issue_context</key><string>testMacroInFunctionDecl</string>
+// CHECK-NEXT: <key>issue_hash</key><string>2</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>549</integer>
+// CHECK-NEXT: <key>col</key><integer>6</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </dict>
// CHECK-NEXT: </array>
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