use ubuntu latest (#1615)

* use ubuntu latest

* Remove regex in CFGNormalizer

* Remove regex header

* use gcc build

* merge reg change

* correct wrong space

---------

Co-authored-by: TalbenXu <[email protected]>

Author: jumormt

.github/workflows/docker_publish_x86.yml

@@ -7,7 +7,7 @@ on:
 jobs:
   docker-x86-image:
     if: github.repository == 'SVF-tools/SVF'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
 
     steps:
       - name: Checkout
@@ -31,7 +31,7 @@ jobs:
 
   dispatch:
       needs: docker-x86-image
-      runs-on: ubuntu-22.04
+      runs-on: ubuntu-latest
       strategy: 
         matrix:
           repo: ['SVF-tools/Software-Security-Analysis', 'SVF-tools/Teaching-Software-Analysis', 'SVF-tools/Teaching-Software-Verification', 'SVF-tools/SVF-example']

.github/workflows/github-action.yml

@@ -16,9 +16,9 @@ jobs:
       XCODE_VERSION: '15.3.0'
     strategy:
       matrix:
-        os: [ubuntu-22.04, macos-latest]
+        os: [ubuntu-latest, macos-latest]
         include:
-          - os: [ubuntu-22.04]
+          - os: [ubuntu-latest]
             sanitizer: address
     steps:
       # checkout the repo
@@ -132,7 +132,7 @@ jobs:
           lcov --remove coverage.info '/usr/*' --output-file coverage.info
           lcov --remove coverage.info '${{github.workspace}}/z3.obj/*' --output-file coverage.info
           lcov --remove coverage.info '${{github.workspace}}/llvm-*.obj/*' --output-file coverage.info
-          lcov --remove coverage.info '${{github.workspace}}/svf/include/FastCluster/*' --output-file coverage.info
+          lcov --remove coverage.info '${{github.workspace}}/svf/include/FastCluster/*' --output-file coverage.info --ignore-errors unused
           lcov --remove coverage.info '${{github.workspace}}/svf/lib/FastCluster/*' --output-file coverage.info
 
       - name: upload-coverage

.github/workflows/svf-lib_publish.yml

@@ -19,7 +19,7 @@ jobs:
       XCODE_VERSION: '15.3.0'  # Define Xcode version here to reuse it
     strategy:
       matrix:
-        os: [ubuntu-22.04, macos-latest]
+        os: [ubuntu-latest, macos-latest]
     steps:
       # checkout the repo
       - uses: actions/checkout@v2

build.sh

@@ -250,10 +250,10 @@ BUILD_DIR="./${BUILD_TYPE}-build"
 rm -rf "${BUILD_DIR}"
 mkdir "${BUILD_DIR}"
 # If you need shared libs, turn BUILD_SHARED_LIBS on
-cmake -D CMAKE_BUILD_TYPE:STRING="${BUILD_TYPE}" \
-    -DSVF_ENABLE_ASSERTIONS:BOOL=true            \
-    -DSVF_SANITIZE="${SVF_SANITIZER}"            \
-    -DBUILD_SHARED_LIBS=off                      \
+cmake -D CMAKE_BUILD_TYPE:STRING="${BUILD_TYPE}"   \
+    -DSVF_ENABLE_ASSERTIONS:BOOL=true              \
+    -DSVF_SANITIZE="${SVF_SANITIZER}"              \
+    -DBUILD_SHARED_LIBS=off                        \
     -S "${SVFHOME}" -B "${BUILD_DIR}"
 cmake --build "${BUILD_DIR}" -j ${jobs}
 

svf/include/Graphs/CFLGraph.h

@@ -33,7 +33,6 @@
 #include <fstream>
 #include <iostream>
 #include <string>
-#include <regex>
 #include "CFL/CFGrammar.h"
 #include "Graphs/GenericGraph.h"
 #include "Graphs/ConsG.h"
@@ -50,7 +49,7 @@ class CFLEdge: public GenericCFLEdgeTy
     typedef GenericNode<CFLNode, CFLEdge>::GEdgeSetTy CFLEdgeSetTy;
 
     CFLEdge(CFLNode *s, CFLNode *d, GEdgeFlag k = 0):
-        GenericCFLEdgeTy(s,d,k)
+          GenericCFLEdgeTy(s,d,k)
     {
     }
     ~CFLEdge() override = default;
@@ -77,7 +76,7 @@ class CFLNode: public GenericCFLNodeTy
 {
 public:
     CFLNode (NodeID i = 0, GNodeK k = CFLNodeKd):
-        GenericCFLNodeTy(i, k)
+          GenericCFLNodeTy(i, k)
     {
     }
 

svf/lib/CFL/CFGNormalizer.cpp

@@ -32,7 +32,6 @@
 #include "Util/WorkList.h"
 #include "SVFIR/SVFValue.h"
 #include <string>
-#include <regex>
 #include <fstream>
 #include <sstream>
 #include <iostream>
@@ -437,13 +436,20 @@ void CFGNormalizer::ebnfSignReplace(char sign, CFGrammar *grammar)
 
 void CFGNormalizer::strTrans(std::string LHS, CFGrammar *grammar, GrammarBase::Production& normalProd)
 {
-    std::smatch matches;
-    std::regex LHSReg("\\s*(.*)");
+    // Find the position of the first non-whitespace character
+    size_t start = LHS.find_first_not_of(" \t\n\r");
+    // If the string contains non-whitespace characters, remove leading spaces
+    if (start != std::string::npos) {
+        LHS = LHS.substr(start);
+    } else {
+        // If the string contains only spaces, clear it
+        LHS.clear();
+    }
+
     std::string delimiter;
     size_t pos;
     std::string word;
-    std::regex_search(LHS, matches, LHSReg);
-    LHS = matches.str(1);
+
     delimiter = " ";
     while ((pos = LHS.find(delimiter)) != std::string::npos)
     {
@@ -454,6 +460,7 @@ void CFGNormalizer::strTrans(std::string LHS, CFGrammar *grammar, GrammarBase::P
     normalProd.push_back(grammar->strToSymbol(LHS));
 }
 
+
 GrammarBase::Symbol CFGNormalizer::check_head(GrammarBase::SymbolMap<GrammarBase::Symbol, GrammarBase::Productions> &grammar, GrammarBase::Production &rule)
 {
     for(auto symProdPair: grammar)

svf/lib/CFL/CFLGraphBuilder.cpp

@@ -193,49 +193,79 @@ CFLGraph* CFLGraphBuilder::buildFromText(std::string fileName, GrammarBase *gram
     return cflGraph;
 }
 
-CFLGraph * CFLGraphBuilder::buildFromDot(std::string fileName, GrammarBase *grammar, BuildDirection direction)
+CFLGraph *CFLGraphBuilder::buildFromDot(std::string fileName, GrammarBase *grammar, BuildDirection direction)
 {
     buildlabelToKindMap(grammar);
     cflGraph = new CFLGraph(grammar->getStartKind());
     std::string lineString;
     std::ifstream inputFile(fileName);
     std::cout << "Building CFL Graph from dot file: " << fileName << "..\n";
-    std::regex reg("Node(\\w+)\\s*->\\s*Node(\\w+)\\s*\\[.*label=(.*)\\]");
     std::cout << std::boolalpha;
-    u32_t lineNum = 0 ;
+
+    u32_t lineNum = 0;
     current = labelToKindMap.size();
 
     while (getline(inputFile, lineString))
     {
         lineNum += 1;
-        std::smatch matches;
-        if (std::regex_search(lineString, matches, reg))
+
+        // Find "Node" prefixes and "->"
+        size_t srcStart = lineString.find("Node");
+        if (srcStart == std::string::npos) continue;
+
+        size_t srcEnd = lineString.find(" ", srcStart);
+        if (srcEnd == std::string::npos) continue;
+
+        size_t arrowPos = lineString.find("->", srcEnd);
+        if (arrowPos == std::string::npos) continue;
+
+        size_t dstStart = lineString.find("Node", arrowPos);
+        if (dstStart == std::string::npos) continue;
+
+        size_t dstEnd = lineString.find(" ", dstStart);
+        if (dstEnd == std::string::npos) continue;
+
+        size_t labelStart = lineString.find("label=", dstEnd);
+        if (labelStart == std::string::npos) continue;
+
+        labelStart += 6; // Move past "label=" to the start of the label
+        size_t labelEnd = lineString.find_first_of("]", labelStart);
+        if (labelEnd == std::string::npos) continue;
+
+        // Extract the source ID, destination ID, and label
+        std::string srcIDStr = lineString.substr(srcStart + 4, srcEnd - (srcStart + 4));
+        std::string dstIDStr = lineString.substr(dstStart + 4, dstEnd - (dstStart + 4));
+        std::string label = lineString.substr(labelStart, labelEnd - labelStart);
+
+        // Convert source and destination IDs from hexadecimal
+        u32_t srcID = std::stoul(srcIDStr, nullptr, 16);
+        u32_t dstID = std::stoul(dstIDStr, nullptr, 16);
+
+        CFLNode *src = addGNode(srcID);
+        CFLNode *dst = addGNode(dstID);
+
+        if (labelToKindMap.find(label) != labelToKindMap.end())
+        {
+            cflGraph->addCFLEdge(src, dst, labelToKindMap[label]);
+        }
+        else
         {
-            u32_t srcID = std::stoul(matches.str(1), nullptr, 16);
-            u32_t dstID = std::stoul(matches.str(2), nullptr, 16);
-            std::string label = matches.str(3);
-            CFLNode *src = addGNode(srcID);
-            CFLNode *dst = addGNode(dstID);
-            if (labelToKindMap.find(label) != labelToKindMap.end())
+            if (Options::FlexSymMap() == true)
+            {
+                labelToKindMap.insert({label, current++});
                 cflGraph->addCFLEdge(src, dst, labelToKindMap[label]);
+            }
             else
             {
-                if(Options::FlexSymMap() == true)
-                {
-                    labelToKindMap.insert({label, current++});
-                    cflGraph->addCFLEdge(src, dst, labelToKindMap[label]);
-                }
-                else
-                {
-                    std::string msg = "In line " + std::to_string(lineNum) +
-                                      " sym can not find in grammar, please correct the input dot or set --flexsymmap.";
-                    SVFUtil::errMsg(msg);
-                    std::cout << msg;
-                    abort();
-                }
+                std::string msg = "In line " + std::to_string(lineNum) +
+                                  " sym cannot be found in grammar. Please correct the input dot or set --flexsymmap.";
+                SVFUtil::errMsg(msg);
+                std::cout << msg;
+                abort();
             }
         }
     }
+
     inputFile.close();
     return cflGraph;
 }
@@ -247,7 +277,6 @@ CFLGraph* CFLGraphBuilder::buildFromJson(std::string fileName, GrammarBase *gram
     return cflGraph;
 }
 
-
 CFLGraph* AliasCFLGraphBuilder::buildBigraph(ConstraintGraph *graph, Kind startKind, GrammarBase *grammar)
 {
     cflGraph = new CFLGraph(startKind);
@@ -543,4 +572,4 @@ CFLGraph* VFCFLGraphBuilder::buildBiPEGgraph(ConstraintGraph *graph, Kind startK
 }
 
 
-} // end of SVF namespace
+} // end of SVF namespace