Bug Summary

File:out/../deps/icu-small/source/common/usetiter.cpp
Warning:line 147, column 5
Returning null reference

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name usetiter.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/home/maurizio/node-v18.6.0/out -resource-dir /usr/local/lib/clang/16.0.0 -D V8_DEPRECATION_WARNINGS -D V8_IMMINENT_DEPRECATION_WARNINGS -D _GLIBCXX_USE_CXX11_ABI=1 -D NODE_OPENSSL_CONF_NAME=nodejs_conf -D NODE_OPENSSL_HAS_QUIC -D __STDC_FORMAT_MACROS -D OPENSSL_NO_PINSHARED -D OPENSSL_THREADS -D U_COMMON_IMPLEMENTATION=1 -D U_ATTRIBUTE_DEPRECATED= -D _CRT_SECURE_NO_DEPRECATE= -D U_STATIC_IMPLEMENTATION=1 -D UCONFIG_NO_SERVICE=1 -D U_ENABLE_DYLOAD=0 -D U_HAVE_STD_STRING=1 -D UCONFIG_NO_BREAK_ITERATION=0 -I ../deps/icu-small/source/common -internal-isystem /usr/lib/gcc/x86_64-redhat-linux/8/../../../../include/c++/8 -internal-isystem /usr/lib/gcc/x86_64-redhat-linux/8/../../../../include/c++/8/x86_64-redhat-linux -internal-isystem /usr/lib/gcc/x86_64-redhat-linux/8/../../../../include/c++/8/backward -internal-isystem /usr/local/lib/clang/16.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-redhat-linux/8/../../../../x86_64-redhat-linux/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -O3 -Wno-unused-parameter -Wno-deprecated-declarations -Wno-strict-aliasing -std=gnu++17 -fdeprecated-macro -fdebug-compilation-dir=/home/maurizio/node-v18.6.0/out -ferror-limit 19 -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2022-08-22-142216-507842-1 -x c++ ../deps/icu-small/source/common/usetiter.cpp
1// © 2016 and later: Unicode, Inc. and others.
2// License & terms of use: http://www.unicode.org/copyright.html
3/*
4**********************************************************************
5* Copyright (c) 2002-2006, International Business Machines
6* Corporation and others. All Rights Reserved.
7**********************************************************************
8*/
9#include "unicode/usetiter.h"
10#include "unicode/uniset.h"
11#include "unicode/unistr.h"
12#include "uvector.h"
13
14U_NAMESPACE_BEGINnamespace icu_71 {
15
16UOBJECT_DEFINE_RTTI_IMPLEMENTATION(UnicodeSetIterator)UClassID UnicodeSetIterator::getStaticClassID() { static char
classID = 0; return (UClassID)&classID; } UClassID UnicodeSetIterator
::getDynamicClassID() const { return UnicodeSetIterator::getStaticClassID
(); }
17
18/**
19 * Create an iterator
20 * @param set set to iterate over
21 */
22UnicodeSetIterator::UnicodeSetIterator(const UnicodeSet& uSet) {
23 cpString = NULL__null;
24 reset(uSet);
25}
26
27/**
28 * Create an iterator. Convenience for when the contents are to be set later.
29 */
30UnicodeSetIterator::UnicodeSetIterator() {
31 this->set = NULL__null;
32 cpString = NULL__null;
33 reset();
34}
35
36UnicodeSetIterator::~UnicodeSetIterator() {
37 delete cpString;
38}
39
40/**
41 * Returns the next element in the set.
42 * @return true if there was another element in the set.
43 * if so, if codepoint == IS_STRING, the value is a string in the string field
44 * else the value is a single code point in the codepoint field.
45 * <br>You are guaranteed that the codepoints are in sorted order, and the strings are in sorted order,
46 * and that all code points are returned before any strings are returned.
47 * <br>Note also that the codepointEnd is undefined after calling this method.
48 */
49UBool UnicodeSetIterator::next() {
50 if (nextElement <= endElement) {
51 codepoint = codepointEnd = nextElement++;
52 string = NULL__null;
53 return TRUE1;
54 }
55 if (range < endRange) {
56 loadRange(++range);
57 codepoint = codepointEnd = nextElement++;
58 string = NULL__null;
59 return TRUE1;
60 }
61
62 if (nextString >= stringCount) return FALSE0;
63 codepoint = (UChar32)IS_STRING; // signal that value is actually a string
64 string = (const UnicodeString*) set->strings->elementAt(nextString++);
65 return TRUE1;
66}
67
68/**
69 * @return true if there was another element in the set.
70 * if so, if codepoint == IS_STRING, the value is a string in the string field
71 * else the value is a range of codepoints in the <codepoint, codepointEnd> fields.
72 * <br>Note that the codepoints are in sorted order, and the strings are in sorted order,
73 * and that all code points are returned before any strings are returned.
74 * <br>You are guaranteed that the ranges are in sorted order, and the strings are in sorted order,
75 * and that all ranges are returned before any strings are returned.
76 * <br>You are also guaranteed that ranges are disjoint and non-contiguous.
77 * <br>Note also that the codepointEnd is undefined after calling this method.
78 */
79UBool UnicodeSetIterator::nextRange() {
80 string = NULL__null;
81 if (nextElement <= endElement) {
82 codepointEnd = endElement;
83 codepoint = nextElement;
84 nextElement = endElement+1;
85 return TRUE1;
86 }
87 if (range < endRange) {
88 loadRange(++range);
89 codepointEnd = endElement;
90 codepoint = nextElement;
91 nextElement = endElement+1;
92 return TRUE1;
93 }
94
95 if (nextString >= stringCount) return FALSE0;
96 codepoint = (UChar32)IS_STRING; // signal that value is actually a string
97 string = (const UnicodeString*) set->strings->elementAt(nextString++);
98 return TRUE1;
99}
100
101/**
102 *@param set the set to iterate over. This allows reuse of the iterator.
103 */
104void UnicodeSetIterator::reset(const UnicodeSet& uSet) {
105 this->set = &uSet;
106 reset();
107}
108
109/**
110 * Resets to the start, to allow the iteration to start over again.
111 */
112void UnicodeSetIterator::reset() {
113 if (set == NULL__null) {
114 // Set up indices to empty iteration
115 endRange = -1;
116 stringCount = 0;
117 } else {
118 endRange = set->getRangeCount() - 1;
119 stringCount = set->stringsSize();
120 }
121 range = 0;
122 endElement = -1;
123 nextElement = 0;
124 if (endRange >= 0) {
125 loadRange(range);
126 }
127 nextString = 0;
128 string = NULL__null;
129}
130
131void UnicodeSetIterator::loadRange(int32_t iRange) {
132 nextElement = set->getRangeStart(iRange);
133 endElement = set->getRangeEnd(iRange);
134}
135
136
137const UnicodeString& UnicodeSetIterator::getString() {
138 if (string==NULL__null && codepoint!=(UChar32)IS_STRING) {
1
Assuming field 'string' is equal to NULL
→
2
←
Assuming field 'codepoint' is equal to IS_STRING
→
3
←
Taking false branch
→
139 if (cpString == NULL__null) {
140 cpString = new UnicodeString();
141 }
142 if (cpString != NULL__null) {
143 cpString->setTo((UChar32)codepoint);
144 }
145 string = cpString;
146 }
147 return *string;
4
←
Returning null reference
148}
149
150U_NAMESPACE_END}
151
152//eof