r363897 - [analyzer] exploded-graph-rewriter: Fix escaping StringRegions.

[Artem Dergachev via cfe-commits]

Author: dergachev
Date: Wed Jun 19 16:33:55 2019
New Revision: 363897

URL: http://llvm.org/viewvc/llvm-project?rev=363897&view=rev
Log:
[analyzer] exploded-graph-rewriter: Fix escaping StringRegions.

Quotes around StringRegions are now escaped and unescaped correctly,
producing valid JSON.

Additionally, add a forgotten escape for Store values.

Differential Revision: https://reviews.llvm.org/D63519

Added:
    cfe/trunk/test/Analysis/exploded-graph-rewriter/escapes.c
Modified:
    cfe/trunk/lib/StaticAnalyzer/Core/RegionStore.cpp
    cfe/trunk/test/Analysis/exploded-graph-rewriter/lit.local.cfg
    cfe/trunk/utils/analyzer/exploded-graph-rewriter.py

Modified: cfe/trunk/lib/StaticAnalyzer/Core/RegionStore.cpp
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/StaticAnalyzer/Core/RegionStore.cpp?rev=363897&r1=363896&r2=363897&view=diff
==============================================================================
--- cfe/trunk/lib/StaticAnalyzer/Core/RegionStore.cpp (original)
+++ cfe/trunk/lib/StaticAnalyzer/Core/RegionStore.cpp Wed Jun 19 16:33:55 2019
@@ -210,6 +210,7 @@ public:
   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 @@ public:
       ++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, /*AddQuotes=*/true);
+        Out << " }";
         if (std::next(CI) != CB.end())
           Out << ',';
         Out << NL;

Added: cfe/trunk/test/Analysis/exploded-graph-rewriter/escapes.c
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/exploded-graph-rewriter/escapes.c?rev=363897&view=auto
==============================================================================
--- cfe/trunk/test/Analysis/exploded-graph-rewriter/escapes.c (added)
+++ cfe/trunk/test/Analysis/exploded-graph-rewriter/escapes.c Wed Jun 19 
16:33:55 2019
@@ -0,0 +1,18 @@
+// FIXME: Figure out how to use %clang_analyze_cc1 with our lit.local.cfg.
+// RUN: %clang_cc1 -analyze -triple x86_64-unknown-linux-gnu \
+// RUN:                     -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: <td align="left"><b>Store: </b></td>
+  // CHECK-SAME: <td align="left">foo</td><td align="left">0</td>
+  // CHECK-SAME: <td align="left">&amp;Element\{"foo",0 S64b,char\}</td>
+  // CHECK: <td align="left"><b>Environment: </b></td>
+  // CHECK-SAME: <td align="left">"foo"</td>
+  // CHECK-SAME: <td align="left">&amp;Element\{"foo",0 S64b,char\}</td>
+  const char *const foo = "foo";
+}

Modified: cfe/trunk/test/Analysis/exploded-graph-rewriter/lit.local.cfg
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/exploded-graph-rewriter/lit.local.cfg?rev=363897&r1=363896&r2=363897&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/exploded-graph-rewriter/lit.local.cfg (original)
+++ cfe/trunk/test/Analysis/exploded-graph-rewriter/lit.local.cfg Wed Jun 19 
16:33:55 2019
@@ -15,4 +15,4 @@ config.substitutions.append(('%exploded_
                                                     config.clang_src_dir,
                                                     'utils', 'analyzer')))))
 
-config.suffixes = ['.dot']
+config.suffixes.add('.dot')

Modified: cfe/trunk/utils/analyzer/exploded-graph-rewriter.py
URL: 
http://llvm.org/viewvc/llvm-project/cfe/trunk/utils/analyzer/exploded-graph-rewriter.py?rev=363897&r1=363896&r2=363897&view=diff
==============================================================================
--- cfe/trunk/utils/analyzer/exploded-graph-rewriter.py (original)
+++ cfe/trunk/utils/analyzer/exploded-graph-rewriter.py Wed Jun 19 16:33:55 2019
@@ -199,6 +199,7 @@ class ExplodedGraph(object):
                                         .replace('\\"', '"') \
                                         .replace('\\{', '{') \
                                         .replace('\\}', '}') \
+                                        .replace('\\\\', '\\') \
                                         .replace('\\<', '\\\\<') \
                                         .replace('\\>', '\\\\>') \
                                         .rstrip(',')


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