Merge pull request #2650 from stweil/cid

Fix several issues reported by Coverity Scan

src/ccmain/equationdetect.h

@@ -2,7 +2,6 @@
 // File:        equationdetect.h
 // Description: The equation detection class that inherits equationdetectbase.
 // Author:      Zongyi (Joe) Liu (joeliu@google.com)
-// Created:     Fri Aug 31 11:13:01 PST 2011
 //
 // (C) Copyright 2011, Google Inc.
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -249,12 +248,12 @@ class EquationDetect : public EquationDetectBase {
 
   // The ColPartitionGrid that we are processing. This pointer is passed in from
   // the caller, so do NOT destroy it in the class.
-  ColPartitionGrid* part_grid_;
+  ColPartitionGrid* part_grid_ = nullptr;
 
   // A simple array of pointers to the best assigned column division at
   // each grid y coordinate. This pointer is passed in from the caller, so do
   // NOT destroy it in the class.
-  ColPartitionSet** best_columns_;
+  ColPartitionSet** best_columns_ = nullptr;
 
   // The super bounding box of all cps in the part_grid_.
   TBOX* cps_super_bbox_;

src/ccmain/par_control.cpp

@@ -2,7 +2,6 @@
 // File:        par_control.cpp
 // Description: Control code for parallel implementation.
 // Author:      Ray Smith
-// Created:     Mon Nov 04 13:23:15 PST 2013
 //
 // (C) Copyright 2013, Google Inc.
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -25,15 +24,15 @@
 namespace tesseract {
 
 struct BlobData {
-  BlobData() : blob(nullptr), choices(nullptr) {}
+  BlobData() = default;
   BlobData(int index, Tesseract* tess, const WERD_RES& word)
     : blob(word.chopped_word->blobs[index]),
       tesseract(tess),
       choices(&(*word.ratings)(index, index)) {}
 
-  TBLOB* blob;
-  Tesseract* tesseract;
-  BLOB_CHOICE_LIST** choices;
+  TBLOB* blob = nullptr;
+  Tesseract* tesseract = nullptr;
+  BLOB_CHOICE_LIST** choices = nullptr;
 };
 
 void Tesseract::PrerecAllWordsPar(const GenericVector<WordData>& words) {

src/ccmain/paragraphs.cpp

@@ -2,7 +2,6 @@
  * File:        paragraphs.cpp
  * Description: Paragraph detection for tesseract.
  * Author:      David Eger
- * Created:     25 February 2011
  *
  * (C) Copyright 2011, Google Inc.
  ** Licensed under the Apache License, Version 2.0 (the "License");
@@ -868,8 +867,7 @@ struct GeometricClassifierState {
   GeometricClassifierState(int dbg_level,
                            GenericVector<RowScratchRegisters> *r,
                            int r_start, int r_end)
-      : debug_level(dbg_level), rows(r), row_start(r_start), row_end(r_end),
-        margin(0) {
+      : debug_level(dbg_level), rows(r), row_start(r_start), row_end(r_end) {
     tolerance = InterwordSpace(*r, r_start, r_end);
     CalculateTabStops(r, r_start, r_end, tolerance,
                       &left_tabs, &right_tabs);
@@ -938,20 +936,20 @@ struct GeometricClassifierState {
   }
 
   // We print out messages with a debug level at least as great as debug_level.
-  int debug_level;
+  int debug_level = 0;
 
   // The Geometric Classifier was asked to find a single paragraph model
   // to fit the text rows (*rows)[row_start, row_end)
   GenericVector<RowScratchRegisters> *rows;
-  int row_start;
-  int row_end;
+  int row_start = 0;
+  int row_end = 0;
 
   // The amount by which we expect the text edge can vary and still be aligned.
-  int tolerance;
+  int tolerance = 0;
 
   // Is the script in this text block left-to-right?
   // HORRIBLE ROUGH APPROXIMATION.  TODO(eger): Improve
-  bool ltr;
+  bool ltr = false;
 
   // These left and right tab stops were determined to be the common tab
   // stops for the given text.
@@ -959,13 +957,13 @@ struct GeometricClassifierState {
   GenericVector<Cluster> right_tabs;
 
   // These are parameters we must determine to create a ParagraphModel.
-  tesseract::ParagraphJustification just;
-  int margin;
-  int first_indent;
-  int body_indent;
+  tesseract::ParagraphJustification just = JUSTIFICATION_UNKNOWN;
+  int margin = 0;
+  int first_indent = 0;
+  int body_indent = 0;
 
   // eop_threshold > 0 if the text is fully justified.  See MarkRowsWithModel()
-  int eop_threshold;
+  int eop_threshold = 0;
 };
 
 // Given a section of text where strong textual clues did not help identifying

src/ccmain/paramsd.h

@@ -2,7 +2,6 @@
 // File:        paramsd.h
 // Description: Tesseract parameter editor
 // Author:      Joern Wanke
-// Created:     Wed Jul 18 10:05:01 PDT 2007
 //
 // (C) Copyright 2007, Google Inc.
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -80,14 +79,16 @@ class ParamContent : public ELIST_LINK {
   // The unique ID of this VC object.
   int my_id_;
   // Whether the parameter was changed_ and thus needs to be rewritten.
-  bool changed_;
+  bool changed_ = false;
   // The actual ParamType of this VC object.
   ParamType param_type_;
 
-  tesseract::StringParam* sIt;
-  tesseract::IntParam* iIt;
-  tesseract::BoolParam* bIt;
-  tesseract::DoubleParam* dIt;
+  union {
+    tesseract::StringParam* sIt;
+    tesseract::IntParam* iIt;
+    tesseract::BoolParam* bIt;
+    tesseract::DoubleParam* dIt;
+  };
 };
 
 ELISTIZEH(ParamContent)

src/ccstruct/blobbox.h

@@ -642,7 +642,7 @@ class TO_ROW: public ELIST2_LINK
     }
 
                                  // true when dead
-    bool merged;
+    bool merged = false;
     bool all_caps;              // had no ascenders
     bool used_dm_model;         // in guessing pitch
     int16_t projection_left;       // start of projection

src/ccstruct/pdblock.h

@@ -2,7 +2,6 @@
  * File:        pdblock.h  (Formerly pdblk.h)
  * Description: Page block class definition.
  * Author:      Ray Smith
- * Created:     Thu Mar 14 17:32:01 GMT 1991
  *
  * (C) Copyright 1991, Hewlett-Packard Ltd.
  ** Licensed under the Apache License, Version 2.0 (the "License");
@@ -134,9 +133,9 @@ class DLLSYM BLOCK_RECT_IT       //rectangle iterator
     }
 
   private:
-    int16_t ymin;                ///< bottom of rectangle
-    int16_t ymax;                ///< top of rectangle
-    PDBLK *block;                ///< block to iterate
+    int16_t ymin = 0;            ///< bottom of rectangle
+    int16_t ymax = 0;            ///< top of rectangle
+    PDBLK* block = nullptr;      ///< block to iterate
     ICOORDELT_IT left_it;        ///< boundary iterators
     ICOORDELT_IT right_it;
 };

src/ccstruct/statistc.cpp

@@ -48,12 +48,6 @@ STATS::STATS(int32_t min_bucket_value, int32_t max_bucket_value_plus_1) {
   clear();
 }
 
-STATS::STATS() {
-  rangemax_ = 0;
-  rangemin_ = 0;
-  buckets_ = nullptr;
-}
-
 /**********************************************************************
  * STATS::set_range
  *

src/ccstruct/statistc.h

@@ -41,7 +41,7 @@ class STATS {
   // TODO(rays) This is ugly. Convert the second argument to
   // max_bucket_value and all the code that uses it.
   STATS(int32_t min_bucket_value, int32_t max_bucket_value_plus_1);
-  STATS();  // empty for arrays
+  STATS() = default; // empty for arrays
 
   ~STATS();
 
@@ -139,11 +139,11 @@ class STATS {
   #endif  // GRAPHICS_DISABLED
 
  private:
-  int32_t rangemin_;                // min of range
+  int32_t rangemin_ = 0;            // min of range
   // rangemax_ is not well named as it is really one past the max.
-  int32_t rangemax_;                // max of range
-  int32_t total_count_;             // no of samples
-  int32_t* buckets_;                // array of cells
+  int32_t rangemax_ = 0;            // max of range
+  int32_t total_count_ = 0;         // no of samples
+  int32_t* buckets_ = nullptr;      // array of cells
 };
 
 // Returns the nth ordered item from the array, as if they were

src/ccstruct/werd.cpp

@@ -336,7 +336,6 @@ WERD* WERD::shallow_copy() {
 
   new_word->blanks = blanks;
   new_word->flags = flags;
-  new_word->dummy = dummy;
   new_word->correct = correct;
   return new_word;
 }
@@ -352,7 +351,6 @@ WERD& WERD::operator=(const WERD& source) {
   blanks = source.blanks;
   flags = source.flags;
   script_id_ = source.script_id_;
-  dummy = source.dummy;
   correct = source.correct;
   if (!cblobs.empty()) cblobs.clear();
   cblobs.deep_copy(&source.cblobs, &C_BLOB::deep_copy);

src/ccstruct/werd.h

@@ -172,7 +172,6 @@ class WERD : public ELIST2_LINK {
 
  private:
   uint8_t blanks;          // no of blanks
-  uint8_t dummy;           // padding
   BITS16 flags;            // flags about word
   BITS16 disp_flags;       // display flags
   int16_t script_id_;      // From unicharset.

src/classify/adaptive.h

@@ -2,7 +2,6 @@
  ** Filename:   adaptive.h
  ** Purpose:    Interface to adaptive matcher.
  ** Author:     Dan Johnson
- ** History:    Fri Mar  8 10:00:49 1991, DSJ, Created.
  **
  ** (c) Copyright Hewlett-Packard Company, 1988.
  ** Licensed under the Apache License, Version 2.0 (the "License");
@@ -27,7 +26,6 @@
 
 typedef struct {
   uint16_t ProtoId;
-  uint16_t dummy;
   PROTO_STRUCT Proto;
 }
 
@@ -57,7 +55,7 @@ typedef union {
 typedef struct {
   uint8_t NumPermConfigs;
   uint8_t MaxNumTimesSeen;  // maximum number of times any TEMP_CONFIG was seen
-  uint8_t dummy[2];         // (cut at matcher_min_examples_for_prototyping)
+                            // (cut at matcher_min_examples_for_prototyping)
   BIT_VECTOR PermProtos;
   BIT_VECTOR PermConfigs;
   LIST TempProtos;
@@ -69,7 +67,6 @@ typedef struct {
   INT_TEMPLATES Templates;
   int NumNonEmptyClasses;
   uint8_t NumPermClasses;
-  uint8_t dummy[3];
   ADAPT_CLASS Class[MAX_NUM_CLASSES];
 } ADAPT_TEMPLATES_STRUCT;
 using ADAPT_TEMPLATES = ADAPT_TEMPLATES_STRUCT*;

src/classify/classify.cpp

@@ -205,6 +205,7 @@ Classify::Classify()
   learn_debug_win_ = nullptr;
   learn_fragmented_word_debug_win_ = nullptr;
   learn_fragments_debug_win_ = nullptr;
+  InitFeatureDefs(&feature_defs_);
 }
 
 Classify::~Classify() {

src/classify/featdefs.h

@@ -2,7 +2,6 @@
  ** Filename:    featdefs.h
  ** Purpose:     Definitions of currently defined feature types.
  ** Author:      Dan Johnson
- ** History:     Mon May 21 08:28:01 1990, DSJ, Created.
  **
  ** (c) Copyright Hewlett-Packard Company, 1988.
  ** Licensed under the Apache License, Version 2.0 (the "License");
@@ -46,7 +45,6 @@ using CHAR_DESC = CHAR_DESC_STRUCT *;
 struct FEATURE_DEFS_STRUCT {
   int32_t NumFeatureTypes;
   const FEATURE_DESC_STRUCT* FeatureDesc[NUM_FEATURE_TYPES];
-  int FeatureEnabled[NUM_FEATURE_TYPES];
 };
 using FEATURE_DEFS = FEATURE_DEFS_STRUCT *;
 

src/classify/shapetable.h

@@ -5,7 +5,6 @@
 // Description: Class to map a classifier shape index to unicharset
 //              indices and font indices.
 // Author:      Ray Smith
-// Created:     Thu Oct 28 17:46:32 PDT 2010
 //
 // (C) Copyright 2010, Google Inc.
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -243,10 +242,10 @@ class Shape {
 
   // Flag indicates that the unichars are sorted, allowing faster set
   // operations with another shape.
-  bool unichars_sorted_;
+  bool unichars_sorted_ = false;
   // If this Shape is part of a ShapeTable the destiation_index_ is the index
   // of some other shape in the ShapeTable with which this shape is merged.
-  int destination_index_;
+  int destination_index_ = 0;
   // Array of unichars, each with a set of fonts. Each unichar has at most
   // one entry in the vector.
   GenericVector<UnicharAndFonts> unichars_;

src/dict/dawg.h

@@ -348,9 +348,7 @@ class Dawg {
 //  DawgPosition(k, w, p, pe true)
 //    We're back in the punctuation dawg.  Continuing there is the only option.
 struct DawgPosition {
-  DawgPosition()
-      : dawg_index(-1), dawg_ref(NO_EDGE), punc_ref(NO_EDGE),
-        back_to_punc(false) {}
+  DawgPosition() = default;
   DawgPosition(int dawg_idx, EDGE_REF dawgref,
                int punc_idx, EDGE_REF puncref,
                bool backtopunc)
@@ -366,12 +364,12 @@ struct DawgPosition {
         back_to_punc == other.back_to_punc;
   }
 
-  EDGE_REF dawg_ref;
-  EDGE_REF punc_ref;
-  int8_t dawg_index;
-  int8_t punc_index;
+  EDGE_REF dawg_ref = NO_EDGE;
+  EDGE_REF punc_ref = NO_EDGE;
+  int8_t dawg_index = -1;
+  int8_t punc_index = -1;
   // Have we returned to the punc dawg at the end of the word?
-  bool back_to_punc;
+  bool back_to_punc = false;
 };
 
 class DawgPositionVector : public GenericVector<DawgPosition> {

src/textord/bbgrid.h

@@ -3,7 +3,6 @@
 // Description: Class to hold BLOBNBOXs in a grid for fast access
 //              to neighbours.
 // Author:      Ray Smith
-// Created:     Wed Jun 06 17:22:01 PDT 2007
 //
 // (C) Copyright 2007, Google Inc.
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -236,8 +235,7 @@ template<typename T> struct PtrHash {
 template<class BBC, class BBC_CLIST, class BBC_C_IT> class GridSearch {
  public:
   GridSearch(BBGrid<BBC, BBC_CLIST, BBC_C_IT>* grid)
-      : grid_(grid), unique_mode_(false),
-        previous_return_(nullptr), next_return_(nullptr) {
+      : grid_(grid) {
   }
 
   // Get the grid x, y coords of the most recently returned BBC.
@@ -347,21 +345,21 @@ template<class BBC, class BBC_CLIST, class BBC_C_IT> class GridSearch {
 
  private:
   // The grid we are searching.
-  BBGrid<BBC, BBC_CLIST, BBC_C_IT>* grid_;
+  BBGrid<BBC, BBC_CLIST, BBC_C_IT>* grid_ = nullptr;
   // For executing a search. The different search algorithms use these in
   // different ways, but most use x_origin_ and y_origin_ as the start position.
-  int x_origin_;
-  int y_origin_;
-  int max_radius_;
-  int radius_;
-  int rad_index_;
-  int rad_dir_;
+  int x_origin_ = 0;
+  int y_origin_ = 0;
+  int max_radius_ = 0;
+  int radius_ = 0;
+  int rad_index_ = 0;
+  int rad_dir_ = 0;
   TBOX rect_;
-  int x_;  // The current location in grid coords, of the current search.
-  int y_;
-  bool unique_mode_;
-  BBC* previous_return_;  // Previous return from Next*.
-  BBC* next_return_;  // Current value of it_.data() used for repositioning.
+  int x_ = 0; // The current location in grid coords, of the current search.
+  int y_ = 0;
+  bool unique_mode_ = false;
+  BBC* previous_return_ = nullptr; // Previous return from Next*.
+  BBC* next_return_ = nullptr; // Current value of it_.data() used for repositioning.
   // An iterator over the list at (x_, y_) in the grid_.
   BBC_C_IT it_;
   // Set of unique returned elements used when unique_mode_ is true.

src/training/lstmtester.cpp

@@ -22,7 +22,7 @@
 namespace tesseract {
 
 LSTMTester::LSTMTester(int64_t max_memory)
-    : test_data_(max_memory), total_pages_(0), async_running_(false) {}
+    : test_data_(max_memory) {}
 
 // Loads a set of lstmf files that were created using the lstm.train config to
 // tesseract into memory ready for testing. Returns false if nothing was

src/training/lstmtester.h

@@ -73,16 +73,16 @@ class LSTMTester {
 
   // The data to test with.
   DocumentCache test_data_;
-  int total_pages_;
+  int total_pages_ = 0;
   // Flag that indicates an asynchronous test is currently running.
   // Protected by running_mutex_.
-  bool async_running_;
+  bool async_running_ = false;
   std::mutex running_mutex_;
   // Stored copies of the args for use while running asynchronously.
-  int test_iteration_;
-  const double* test_training_errors_;
+  int test_iteration_ = 0;
+  const double* test_training_errors_ = nullptr;
   TessdataManager test_model_mgr_;
-  int test_training_stage_;
+  int test_training_stage_ = 0;
   STRING test_result_;
 };
 

src/training/text2image.cpp

@@ -598,7 +598,7 @@ static int Main() {
         rand_utf8.append(kSeparator);
       }
     }
-    tlog(1, "Rendered ngram string of size %d\n", rand_utf8.length());
+    tlog(1, "Rendered ngram string of size %zu\n", rand_utf8.length());
     src_utf8.swap(rand_utf8);
   }
   if (FLAGS_only_extract_font_properties) {

src/training/wordlist2dawg.cpp

@@ -54,7 +54,6 @@ int main(int argc, char** argv) {
     tprintf("Set reverse_policy to %s\n",
             tesseract::Trie::get_reverse_policy_name(reverse_policy));
   }
-  if (argc == 7) argv_index += 3;
   const char* wordlist_filename = argv[++argv_index];
   const char* dawg_filename = argv[++argv_index];
   const char* unicharset_file = argv[++argv_index];

src/viewer/scrollview.h

@@ -60,21 +60,17 @@ enum SVEventType {
 struct SVEvent {
   ~SVEvent() { delete [] parameter; }
   SVEvent* copy();
-  SVEventType type;    // What kind of event.
-  ScrollView* window;  // Window event relates to.
-  int x;               // Coords of click or selection.
-  int y;
-  int x_size;          // Size of selection.
-  int y_size;
-  int command_id;      // The ID of the possibly associated event (e.g. MENU)
-  char* parameter;     // Any string that might have been passed as argument.
-  int counter;         // Used to detect which kind of event to process next.
-
-  SVEvent() {
-    window = nullptr;
-    parameter = nullptr;
-  }
+  SVEventType type = SVET_DESTROY; // What kind of event.
+  ScrollView* window = nullptr; // Window event relates to.
+  char* parameter = nullptr; // Any string that might have been passed as argument.
+  int x = 0;           // Coords of click or selection.
+  int y = 0;
+  int x_size = 0;      // Size of selection.
+  int y_size = 0;
+  int command_id = 0;  // The ID of the possibly associated event (e.g. MENU)
+  int counter = 0;     // Used to detect which kind of event to process next.
 
+  SVEvent() = default;
   SVEvent(const SVEvent&);
   SVEvent& operator=(const SVEvent&);
 };

src/wordrec/language_model.cpp

@@ -127,10 +127,7 @@ LanguageModel::LanguageModel(const UnicityTable<FontInfo> *fontinfo_table,
                        dict->getCCUtil()->params()),
       dawg_args_(nullptr, new DawgPositionVector(), NO_PERM),
       fontinfo_table_(fontinfo_table),
-      dict_(dict),
-      fixed_pitch_(false),
-      max_char_wh_ratio_(0.0),
-      acceptable_choice_found_(false) {
+      dict_(dict) {
   ASSERT_HOST(dict_ != nullptr);
 }
 

src/wordrec/language_model.h

@@ -4,7 +4,6 @@
 //              structure and statistics of the language to help segmentation
 //              search.
 // Author:      Daria Antonova
-// Created:     Mon Nov 11 11:26:43 PST 2009
 //
 // (C) Copyright 2009, Google Inc.
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -372,26 +371,26 @@ class LanguageModel {
   // avoid dynamic memory re-allocation (should be cleared before each use).
   DawgArgs dawg_args_;
   // Scaling for recovering blob outline length from rating and certainty.
-  float rating_cert_scale_;
+  float rating_cert_scale_ = 0.0f;
 
   // The following variables are set at construction time.
 
   // Pointer to fontinfo table (not owned by LanguageModel).
-  const UnicityTable<FontInfo> *fontinfo_table_;
+  const UnicityTable<FontInfo>* fontinfo_table_ = nullptr;
 
   // Pointer to Dict class, that is used for querying the dictionaries
   // (the pointer is not owned by LanguageModel).
-  Dict *dict_;
+  Dict* dict_ = nullptr;
 
   // TODO(daria): the following variables should become LanguageModel params
   // when the old code in bestfirst.cpp and heuristic.cpp is deprecated.
   //
   // Set to true if we are dealing with fixed pitch text
   // (set to assume_fixed_pitch_char_segment).
-  bool fixed_pitch_;
+  bool fixed_pitch_ = false;
   // Max char width-to-height ratio allowed
   // (set to segsearch_max_char_wh_ratio).
-  float max_char_wh_ratio_;
+  float max_char_wh_ratio_ = 0.0f;
 
   // The following variables are initialized with InitForWord().
 
@@ -399,7 +398,7 @@ class LanguageModel {
   // (since this is only used by the character ngram model component,
   // only the last language_model_ngram_order of the word are stored).
   STRING prev_word_str_;
-  int prev_word_unichar_step_len_;
+  int prev_word_unichar_step_len_ = 0;
   // Active dawg vector.
   DawgPositionVector very_beginning_active_dawgs_;  // includes continuation
   DawgPositionVector beginning_active_dawgs_;
@@ -414,9 +413,9 @@ class LanguageModel {
   // choices. This way the stopper will know that the best choice is not
   // ambiguous (i.e. there are best choices in the best choice list that have
   // ratings close to the very best one) and will be less likely to mis-adapt.
-  bool acceptable_choice_found_;
+  bool acceptable_choice_found_ = false;
   // Set to true if a choice representing correct segmentation was explored.
-  bool correct_segmentation_explored_;
+  bool correct_segmentation_explored_ = false;
 
   // Params models containing weights for for computing ViterbiStateEntry costs.
   ParamsModel params_model_;