[PATCH] D63519: [analyzer] exploded-graph-rewriter: Fix escaping and unescaping of StringRegions.

[Artem Dergachev via Phabricator via cfe-commits]

NoQ created this revision.
NoQ added a reviewer: Charusso.
Herald added subscribers: cfe-commits, dkrupp, donat.nagy, Szelethus, mikhail.ramalho, a.sidorin, szepet, baloghadamsoftware, xazax.hun.
Herald added a project: clang.

Additionally, add a forgotten escape for Store values.


Repository:
  rC Clang

https://reviews.llvm.org/D63519

Files:
  clang/lib/StaticAnalyzer/Core/RegionStore.cpp
  clang/test/Analysis/exploded-graph-rewriter/escapes.c
  clang/test/Analysis/exploded-graph-rewriter/lit.local.cfg
  clang/utils/analyzer/exploded-graph-rewriter.py


Index: clang/utils/analyzer/exploded-graph-rewriter.py
===================================================================
--- clang/utils/analyzer/exploded-graph-rewriter.py
+++ clang/utils/analyzer/exploded-graph-rewriter.py
@@ -284,6 +284,7 @@
                                         .replace('\\"', '"') \
                                         .replace('\\{', '{') \
                                         .replace('\\}', '}') \
+                                        .replace('\\\\', '\\') \
                                         .replace('\\<', '\\\\<') \
                                         .replace('\\>', '\\\\>') \
                                         .rstrip(',')
Index: clang/test/Analysis/exploded-graph-rewriter/lit.local.cfg
===================================================================
--- clang/test/Analysis/exploded-graph-rewriter/lit.local.cfg
+++ clang/test/Analysis/exploded-graph-rewriter/lit.local.cfg
@@ -15,4 +15,4 @@
                                                     config.clang_src_dir,
                                                     'utils', 'analyzer')))))
 
-config.suffixes = ['.dot']
+config.suffixes.add('.dot')
Index: clang/test/Analysis/exploded-graph-rewriter/escapes.c
===================================================================
--- /dev/null
+++ clang/test/Analysis/exploded-graph-rewriter/escapes.c
@@ -0,0 +1,18 @@
+// FIXME: Figure out how to use %clang_analyze_cc1 with our lit.local.cfg.
+// RUN: %clang_cc1 -analyze -analyzer-checker=core \
+// RUN:                     -analyzer-dump-egraph=%t.dot %s
+// RUN: %exploded_graph_rewriter %t.dot | FileCheck %s
+
+// FIXME: Substitution doesn't seem to work on Windows.
+// UNSUPPORTED: system-windows
+
+void string_region_escapes() {
+  // CHECK: const char *const foo = "foo";
+  // CHECK-SAME: Store:
+  // CHECK-SAME: <td align="left">foo</td><td align="left">0</td>
+  // CHECK-SAME: <td align="left">&Element\{"foo",0 S64b,char\}</td>
+  // CHECK-SAME: Environment:
+  // CHECK-SAME: <td align="left">"foo"</td>
+  // CHECK-SAME: <td align="left">&Element\{"foo",0 S64b,char\}</td>
+  const char *const foo = "foo";
+}
Index: clang/lib/StaticAnalyzer/Core/RegionStore.cpp
===================================================================
--- clang/lib/StaticAnalyzer/Core/RegionStore.cpp
+++ clang/lib/StaticAnalyzer/Core/RegionStore.cpp
@@ -210,6 +210,7 @@
   void printJson(raw_ostream &Out, const char *NL = "\n",
                  unsigned int Space = 0, bool IsDot = false) const {
     for (iterator I = begin(); I != end(); ++I) {
+      // TODO: We might need a .printJson for I.getKey() as well.
       Indent(Out, Space, IsDot)
           << "{ \"cluster\": \"" << I.getKey() << "\", \"pointer\": \""
           << (const void *)I.getKey() << "\", \"items\": [" << NL;
@@ -217,8 +218,9 @@
       ++Space;
       const ClusterBindings &CB = I.getData();
       for (ClusterBindings::iterator CI = CB.begin(); CI != CB.end(); ++CI) {
-        Indent(Out, Space, IsDot) << "{ " << CI.getKey() << ", \"value\": \""
-                                  << CI.getData() << "\" }";
+        Indent(Out, Space, IsDot) << "{ " << CI.getKey() << ", \"value\": ";
+        CI.getData().printJson(Out, true);
+        Out << " }";
         if (std::next(CI) != CB.end())
           Out << ',';
         Out << NL;


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D63519.205444.patch
Type: text/x-patch
Size: 3363 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20190618/6881faa2/attachment.bin>