[clang][analyzer] Fix #embed crash (llvm#107764)

Fix llvm#107724.
VitaNuo · Sep 12, 2024 · f531a99 · f531a99
1 parent 364e9e9
commit f531a99
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Showing 2 changed files with 13 additions and 4 deletions.
diff --git a/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp b/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
@@ -1938,6 +1938,7 @@ void ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred,
     case Stmt::CXXRewrittenBinaryOperatorClass:
     case Stmt::RequiresExprClass:
     case Expr::CXXParenListInitExprClass:
+    case Stmt::EmbedExprClass:
       // Fall through.
 
     // Cases we intentionally don't evaluate, since they don't need
@@ -2440,10 +2441,6 @@ void ExprEngine::Visit(const Stmt *S, ExplodedNode *Pred,
       Bldr.addNodes(Dst);
       break;
     }
-
-    case Stmt::EmbedExprClass:
-      llvm::report_fatal_error("Support for EmbedExpr is not implemented.");
-      break;
   }
 }
 

diff --git a/clang/test/Analysis/embed.c b/clang/test/Analysis/embed.c
@@ -0,0 +1,12 @@
+// RUN: %clang_analyze_cc1 -std=c23 -analyzer-checker=core,debug.ExprInspection -verify %s
+
+void clang_analyzer_dump_ptr(const unsigned char *ptr);
+void clang_analyzer_dump(unsigned char val);
+
+int main() {
+    const unsigned char SelfBytes[] = {
+        #embed "embed.c"
+    };
+    clang_analyzer_dump_ptr(SelfBytes); // expected-warning {{&Element{SelfBytes,0 S64b,unsigned char}}}
+    clang_analyzer_dump(SelfBytes[0]); // expected-warning {{Unknown}} FIXME: This should be the `/` character.
+}