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Merge branch 'main' into dependabot/pip/scripts/pip-c52dbdc267
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‎.github/workflows/upgrade_codeql_dependencies.yml

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -53,7 +53,7 @@ jobs:
5353
find c \( -name '*.ql' -or -name '*.qll' \) -print0 | xargs -0 --max-procs "$XARGS_MAX_PROCS" codeql query format --in-place
5454
5555
- name: Create Pull Request
56-
uses: peter-evans/create-pull-request@5e914681df9dc83aa4e4905692ca88beb2f9e91f # v7.0.5
56+
uses: peter-evans/create-pull-request@67ccf781d68cd99b580ae25a5c18a1cc84ffff1f # v7.0.6
5757
with:
5858
title: "Upgrade `github/codeql` dependency to ${{ github.event.inputs.codeql_cli_version }}"
5959
body: |

‎amendments.csv

Lines changed: 34 additions & 33 deletions
Original file line numberDiff line numberDiff line change
@@ -1,49 +1,50 @@
11
language,standard,amendment,rule_id,supportable,implementation_category,implemented,difficulty
2-
c,MISRA-C-2012,Amendment3,DIR-4-6,Yes,Expand,No,Easy
2+
c,MISRA-C-2012,Amendment3,DIR-4-6,Yes,Expand,Yes,Easy
33
c,MISRA-C-2012,Amendment3,DIR-4-9,Yes,Refine,No,Easy
44
c,MISRA-C-2012,Amendment3,DIR-4-11,Yes,Refine,No,Import
55
c,MISRA-C-2012,Amendment3,RULE-1-4,Yes,Replace,No,Easy
6-
c,MISRA-C-2012,Amendment3,RULE-10-1,Yes,Replace,No,Easy
7-
c,MISRA-C-2012,Amendment3,RULE-10-3,Yes,Refine,No,Easy
8-
c,MISRA-C-2012,Amendment3,RULE-10-4,Yes,Refine,No,Import
9-
c,MISRA-C-2012,Amendment3,RULE-10-5,Yes,Expand,No,Easy
10-
c,MISRA-C-2012,Amendment3,RULE-10-7,Yes,Refine,No,Import
11-
c,MISRA-C-2012,Amendment3,RULE-10-8,Yes,Refine,No,Import
12-
c,MISRA-C-2012,Amendment3,RULE-21-11,Yes,Clarification,No,Import
6+
c,MISRA-C-2012,Amendment3,RULE-10-1,Yes,Replace,Yes,Easy
7+
c,MISRA-C-2012,Amendment3,RULE-10-3,Yes,Refine,Yes,Easy
8+
c,MISRA-C-2012,Amendment3,RULE-10-4,Yes,Refine,Yes,Import
9+
c,MISRA-C-2012,Amendment3,RULE-10-5,Yes,Expand,Yes,Easy
10+
c,MISRA-C-2012,Amendment3,RULE-10-7,Yes,Refine,Yes,Import
11+
c,MISRA-C-2012,Amendment3,RULE-10-8,Yes,Refine,Yes,Import
12+
c,MISRA-C-2012,Amendment3,RULE-21-11,Yes,Clarification,Yes,Import
1313
c,MISRA-C-2012,Amendment3,RULE-21-12,Yes,Replace,No,Easy
1414
c,MISRA-C-2012,Amendment4,RULE-11-3,Yes,Expand,No,Easy
1515
c,MISRA-C-2012,Amendment4,RULE-11-8,Yes,Expand,No,Easy
1616
c,MISRA-C-2012,Amendment4,RULE-13-2,Yes,Expand,No,Very Hard
1717
c,MISRA-C-2012,Amendment4,RULE-18-6,Yes,Expand,No,Medium
1818
c,MISRA-C-2012,Amendment4,RULE-18-8,Yes,Split,Yes,Easy
19-
c,MISRA-C-2012,Corrigendum2,RULE-2-2,Yes,Clarification,No,Import
20-
c,MISRA-C-2012,Corrigendum2,RULE-2-7,Yes,Clarification,No,Import
21-
c,MISRA-C-2012,Corrigendum2,RULE-3-1,Yes,Refine,No,Easy
22-
c,MISRA-C-2012,Corrigendum2,RULE-8-6,Yes,Clarification,No,Import
23-
c,MISRA-C-2012,Corrigendum2,RULE-8-9,Yes,Clarification,No,Import
24-
c,MISRA-C-2012,Corrigendum2,RULE-9-4,Yes,Clarification,No,Import
25-
c,MISRA-C-2012,Corrigendum2,RULE-10-1,Yes,Clarification,No,Import
26-
c,MISRA-C-2012,Corrigendum2,RULE-18-3,Yes,Clarification,No,Import
27-
c,MISRA-C-2012,Corrigendum2,RULE-1-4,Yes,Replace,No,Easy
28-
c,MISRA-C-2012,Corrigendum2,RULE-9-1,Yes,Refine,No,Easy
29-
c,MISRA-C-2012,Corrigendum2,RULE-9-2,Yes,Refine,No,Import
30-
c,MISRA-C-2012,Corrigendum2,DIR-4-10,Yes,Clarification,No,Import
19+
c,MISRA-C-2012,Amendment4,RULE-2-2,Yes,Clarification,Yes,Import
20+
c,MISRA-C-2012,Amendment4,RULE-2-7,Yes,Clarification,Yes,Import
21+
c,MISRA-C-2012,Amendment4,RULE-3-1,Yes,Refine,No,Easy
22+
c,MISRA-C-2012,Amendment4,RULE-8-6,Yes,Clarification,Yes,Import
23+
c,MISRA-C-2012,Amendment4,RULE-8-9,Yes,Clarification,Yes,Import
24+
c,MISRA-C-2012,Amendment4,RULE-9-4,Yes,Clarification,Yes,Import
25+
c,MISRA-C-2012,Amendment4,RULE-10-1,Yes,Clarification,Yes,Import
26+
c,MISRA-C-2012,Amendment4,RULE-18-3,Yes,Clarification,Yes,Import
27+
c,MISRA-C-2012,Amendment4,RULE-1-4,Yes,Replace,No,Easy
28+
c,MISRA-C-2012,Amendment4,RULE-9-1,Yes,Refine,No,Easy
29+
c,MISRA-C-2012,Amendment4,RULE-9-2,Yes,Refine,No,Import
30+
c,MISRA-C-2012,Corrigendum2,DIR-4-10,Yes,Clarification,Yes,Import
3131
c,MISRA-C-2012,Corrigendum2,RULE-7-4,Yes,Refine,No,Easy
32-
c,MISRA-C-2012,Corrigendum2,RULE-8-2,Yes,Clarification,No,Import
32+
c,MISRA-C-2012,Corrigendum2,RULE-8-2,Yes,Clarification,Yes,Import
3333
c,MISRA-C-2012,Corrigendum2,RULE-8-3,Yes,Refine,No,Easy
34-
c,MISRA-C-2012,Corrigendum2,RULE-8-7,Yes,Clarification,No,Import
34+
c,MISRA-C-2012,Corrigendum2,RULE-8-7,Yes,Clarification,Yes,Import
35+
c,MISRA-C-2012,Corrigendum2,RULE-10-1,Yes,Clarification,Yes,Import
3536
c,MISRA-C-2012,Corrigendum2,RULE-10-2,Yes,Refine,No,Easy
36-
c,MISRA-C-2012,Corrigendum2,RULE-10-3,Yes,Clarification,No,Import
37-
c,MISRA-C-2012,Corrigendum2,RULE-11-3,Yes,Clarification,No,Import
38-
c,MISRA-C-2012,Corrigendum2,RULE-11-6,Yes,Clarification,No,Import
39-
c,MISRA-C-2012,Corrigendum2,RULE-13-2,Yes,Clarification,No,Import
40-
c,MISRA-C-2012,Corrigendum2,RULE-13-6,Yes,Clarification,No,Import
37+
c,MISRA-C-2012,Corrigendum2,RULE-10-3,Yes,Clarification,Yes,Import
38+
c,MISRA-C-2012,Corrigendum2,RULE-11-3,Yes,Clarification,Yes,Import
39+
c,MISRA-C-2012,Corrigendum2,RULE-11-6,Yes,Clarification,Yes,Import
40+
c,MISRA-C-2012,Corrigendum2,RULE-13-2,Yes,Clarification,Yes,Import
41+
c,MISRA-C-2012,Corrigendum2,RULE-13-6,Yes,Clarification,Yes,Import
4142
c,MISRA-C-2012,Corrigendum2,RULE-14-3,Yes,Refine,No,Easy
42-
c,MISRA-C-2012,Corrigendum2,RULE-15-7,Yes,Clarification,No,Import
43-
c,MISRA-C-2012,Corrigendum2,RULE-17-4,Yes,Clarification,No,Import
44-
c,MISRA-C-2012,Corrigendum2,RULE-17-5,Yes,Clarification,No,Import
43+
c,MISRA-C-2012,Corrigendum2,RULE-15-7,Yes,Clarification,Yes,Import
44+
c,MISRA-C-2012,Corrigendum2,RULE-17-4,Yes,Clarification,Yes,Import
45+
c,MISRA-C-2012,Corrigendum2,RULE-17-5,Yes,Clarification,Yes,Import
4546
c,MISRA-C-2012,Corrigendum2,RULE-18-1,Yes,Refine,No,Easy
46-
c,MISRA-C-2012,Corrigendum2,RULE-20-14,No,Clarification,No,Import
47-
c,MISRA-C-2012,Corrigendum2,RULE-21-19,Yes,Clarification,No,Import
47+
c,MISRA-C-2012,Corrigendum2,RULE-20-14,No,Clarification,Yes,Import
48+
c,MISRA-C-2012,Corrigendum2,RULE-21-19,Yes,Clarification,Yes,Import
4849
c,MISRA-C-2012,Corrigendum2,RULE-21-20,Yes,Refine,No,Easy
49-
c,MISRA-C-2012,Corrigendum2,RULE-22-9,Yes,Clarification,No,Import
50+
c,MISRA-C-2012,Corrigendum2,RULE-22-9,Yes,Clarification,Yes,Import

‎c/cert/src/codeql-pack.lock.yml

Lines changed: 10 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -2,23 +2,23 @@
22
lockVersion: 1.0.0
33
dependencies:
44
codeql/cpp-all:
5-
version: 1.4.2
5+
version: 2.1.1
66
codeql/dataflow:
7-
version: 1.1.1
7+
version: 1.1.6
88
codeql/mad:
9-
version: 1.0.7
9+
version: 1.0.12
1010
codeql/rangeanalysis:
11-
version: 1.0.7
11+
version: 1.0.12
1212
codeql/ssa:
13-
version: 1.0.7
13+
version: 1.0.12
1414
codeql/tutorial:
15-
version: 1.0.7
15+
version: 1.0.12
1616
codeql/typeflow:
17-
version: 1.0.7
17+
version: 1.0.12
1818
codeql/typetracking:
19-
version: 1.0.7
19+
version: 1.0.12
2020
codeql/util:
21-
version: 1.0.7
21+
version: 1.0.12
2222
codeql/xml:
23-
version: 1.0.7
23+
version: 1.0.12
2424
compiled: false

‎c/cert/src/qlpack.yml

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
11
name: codeql/cert-c-coding-standards
2-
version: 2.41.0-dev
2+
version: 2.42.0-dev
33
description: CERT C 2016
44
suites: codeql-suites
55
license: MIT
66
dependencies:
77
codeql/common-c-coding-standards: '*'
8-
codeql/cpp-all: 1.4.2
8+
codeql/cpp-all: 2.1.1

‎c/cert/src/rules/CON30-C/CleanUpThreadSpecificStorage.ql

Lines changed: 0 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,6 @@
1515
import cpp
1616
import codingstandards.c.cert
1717
import codingstandards.cpp.Concurrency
18-
import semmle.code.cpp.dataflow.TaintTracking
1918
import semmle.code.cpp.dataflow.DataFlow
2019

2120
module TssCreateToTssDeleteConfig implements DataFlow::ConfigSig {

‎c/cert/src/rules/CON34-C/AppropriateThreadObjectStorageDurations.ql

Lines changed: 31 additions & 18 deletions
Original file line numberDiff line numberDiff line change
@@ -14,30 +14,43 @@
1414

1515
import cpp
1616
import codingstandards.c.cert
17+
import codingstandards.c.Objects
1718
import codingstandards.cpp.Concurrency
18-
import semmle.code.cpp.dataflow.TaintTracking
1919
import semmle.code.cpp.dataflow.DataFlow
2020
import semmle.code.cpp.commons.Alloc
2121

22-
from C11ThreadCreateCall tcc, StackVariable sv, Expr arg, Expr acc
22+
from C11ThreadCreateCall tcc, Expr arg
2323
where
2424
not isExcluded(tcc, Concurrency4Package::appropriateThreadObjectStorageDurationsQuery()) and
2525
tcc.getArgument(2) = arg and
26-
sv.getAnAccess() = acc and
27-
// a stack variable that is given as an argument to a thread
28-
TaintTracking::localTaint(DataFlow::exprNode(acc), DataFlow::exprNode(arg)) and
29-
// or isn't one of the allowed usage patterns
30-
not exists(Expr mfc |
31-
isAllocationExpr(mfc) and
32-
sv.getAnAssignedValue() = mfc and
33-
acc.getAPredecessor*() = mfc
34-
) and
35-
not exists(TSSGetFunctionCall tsg, TSSSetFunctionCall tss, DataFlow::Node src |
36-
sv.getAnAssignedValue() = tsg and
37-
acc.getAPredecessor*() = tsg and
38-
// there should be dataflow from somewhere (the same somewhere)
39-
// into each of the first arguments
40-
DataFlow::localFlow(src, DataFlow::exprNode(tsg.getArgument(0))) and
41-
DataFlow::localFlow(src, DataFlow::exprNode(tss.getArgument(0)))
26+
(
27+
exists(ObjectIdentity obj, Expr acc |
28+
obj.getASubobjectAccess() = acc and
29+
obj.getStorageDuration().isAutomatic() and
30+
exists(DataFlow::Node addrNode |
31+
(
32+
addrNode = DataFlow::exprNode(any(AddressOfExpr e | e.getOperand() = acc))
33+
or
34+
addrNode = DataFlow::exprNode(acc) and
35+
exists(ArrayToPointerConversion c | c.getExpr() = acc)
36+
) and
37+
TaintTracking::localTaint(addrNode, DataFlow::exprNode(arg))
38+
)
39+
)
40+
or
41+
// TODO: This case is handling threadlocals in a useful way that's not intended to be covered
42+
// by the rule. See issue #801. The actual rule should expect no tss_t objects is used, and
43+
// this check that this is initialized doesn't seem to belong here. However, it is a useful
44+
// check in and of itself, so we should figure out if this is part of an optional rule we
45+
// haven't yet implemented and move this behavior there.
46+
exists(TSSGetFunctionCall tsg |
47+
TaintTracking::localTaint(DataFlow::exprNode(tsg), DataFlow::exprNode(arg)) and
48+
not exists(TSSSetFunctionCall tss, DataFlow::Node src |
49+
// there should be dataflow from somewhere (the same somewhere)
50+
// into each of the first arguments
51+
DataFlow::localFlow(src, DataFlow::exprNode(tsg.getArgument(0))) and
52+
DataFlow::localFlow(src, DataFlow::exprNode(tss.getArgument(0)))
53+
)
54+
)
4255
)
4356
select tcc, "$@ not declared with appropriate storage duration", arg, "Shared object"

‎c/cert/src/rules/CON34-C/ThreadObjectStorageDurationsNotInitialized.ql

Lines changed: 0 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -16,7 +16,6 @@
1616
import cpp
1717
import codingstandards.c.cert
1818
import codingstandards.cpp.Concurrency
19-
import semmle.code.cpp.dataflow.TaintTracking
2019
import semmle.code.cpp.dataflow.DataFlow
2120

2221
from TSSGetFunctionCall tsg, ThreadedFunction tf

‎c/cert/src/rules/CON39-C/ThreadWasPreviouslyJoinedOrDetached.ql

Lines changed: 6 additions & 33 deletions
Original file line numberDiff line numberDiff line change
@@ -14,37 +14,10 @@
1414

1515
import cpp
1616
import codingstandards.c.cert
17-
import codingstandards.cpp.Concurrency
17+
import codingstandards.cpp.rules.joinordetachthreadonlyonce.JoinOrDetachThreadOnlyOnce
1818

19-
// OK
20-
// 1) Thread calls detach parent DOES NOT call join
21-
// 2) Parent calls join, thread does NOT call detach()
22-
// NOT OK
23-
// 1) Thread calls detach, parent calls join
24-
// 2) Thread calls detach twice, parent does not call join
25-
// 3) Parent calls join twice, thread does not call detach
26-
from C11ThreadCreateCall tcc
27-
where
28-
not isExcluded(tcc, Concurrency5Package::threadWasPreviouslyJoinedOrDetachedQuery()) and
29-
// Note: These cases can be simplified but they are presented like this for clarity
30-
// case 1 - calls to `thrd_join` and `thrd_detach` within the parent or
31-
// within the parent / child CFG.
32-
exists(C11ThreadWait tw, C11ThreadDetach dt |
33-
tw = getAThreadContextAwareSuccessor(tcc) and
34-
dt = getAThreadContextAwareSuccessor(tcc)
35-
)
36-
or
37-
// case 2 - multiple calls to `thrd_detach` within the threaded CFG.
38-
exists(C11ThreadDetach dt1, C11ThreadDetach dt2 |
39-
dt1 = getAThreadContextAwareSuccessor(tcc) and
40-
dt2 = getAThreadContextAwareSuccessor(tcc) and
41-
not dt1 = dt2
42-
)
43-
or
44-
// case 3 - multiple calls to `thrd_join` within the threaded CFG.
45-
exists(C11ThreadWait tw1, C11ThreadWait tw2 |
46-
tw1 = getAThreadContextAwareSuccessor(tcc) and
47-
tw2 = getAThreadContextAwareSuccessor(tcc) and
48-
not tw1 = tw2
49-
)
50-
select tcc, "Thread may call join or detach after the thread is joined or detached."
19+
class ThreadWasPreviouslyJoinedOrDetachedQuery extends JoinOrDetachThreadOnlyOnceSharedQuery {
20+
ThreadWasPreviouslyJoinedOrDetachedQuery() {
21+
this = Concurrency5Package::threadWasPreviouslyJoinedOrDetachedQuery()
22+
}
23+
}

‎c/cert/src/rules/DCL30-C/AppropriateStorageDurationsFunctionReturn.ql

Lines changed: 9 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -13,10 +13,16 @@
1313

1414
import cpp
1515
import codingstandards.c.cert
16+
import codingstandards.c.Objects
1617
import semmle.code.cpp.dataflow.DataFlow
1718

18-
class Source extends StackVariable {
19-
Source() { not this instanceof Parameter }
19+
class Source extends Expr {
20+
ObjectIdentity rootObject;
21+
22+
Source() {
23+
rootObject.getStorageDuration().isAutomatic() and
24+
this = rootObject.getASubobjectAddressExpr()
25+
}
2026
}
2127

2228
class Sink extends DataFlow::Node {
@@ -40,7 +46,7 @@ from DataFlow::Node src, DataFlow::Node sink
4046
where
4147
not isExcluded(sink.asExpr(),
4248
Declarations8Package::appropriateStorageDurationsFunctionReturnQuery()) and
43-
exists(Source s | src.asExpr() = s.getAnAccess()) and
49+
exists(Source s | src.asExpr() = s) and
4450
sink instanceof Sink and
4551
DataFlow::localFlow(src, sink)
4652
select sink, "$@ with automatic storage may be accessible outside of its lifetime.", src,

‎c/cert/src/rules/ERR30-C/ErrnoReadBeforeReturn.ql

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -14,6 +14,7 @@
1414
import cpp
1515
import codingstandards.c.cert
1616
import codingstandards.c.Errno
17+
import semmle.code.cpp.dataflow.DataFlow
1718

1819
/**
1920
* A call to an `OutOfBandErrnoSettingFunction`

‎c/cert/src/rules/ERR30-C/FunctionCallBeforeErrnoCheck.ql

Lines changed: 0 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -14,7 +14,6 @@
1414
import cpp
1515
import codingstandards.c.cert
1616
import codingstandards.c.Errno
17-
import semmle.code.cpp.dataflow.DataFlow
1817

1918
/**
2019
* A call to an `OutOfBandErrnoSettingFunction`

‎c/cert/src/rules/ERR30-C/SetlocaleMightSetErrno.ql

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -13,6 +13,7 @@
1313
import cpp
1414
import codingstandards.c.cert
1515
import codingstandards.c.Errno
16+
import semmle.code.cpp.dataflow.DataFlow
1617

1718
class SetlocaleFunctionCall extends FunctionCall {
1819
SetlocaleFunctionCall() { this.getTarget().hasGlobalName("setlocale") }

‎c/cert/src/rules/ERR32-C/DoNotRelyOnIndeterminateValuesOfErrno.ql

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -20,17 +20,17 @@ import semmle.code.cpp.controlflow.Guards
2020
* A check on `signal` call return value
2121
* `if (signal(SIGINT, handler) == SIG_ERR)`
2222
*/
23-
class SignalCheckOperation extends EqualityOperation, GuardCondition {
23+
class SignalCheckOperation extends EqualityOperation instanceof GuardCondition {
2424
BasicBlock errorSuccessor;
2525

2626
SignalCheckOperation() {
2727
this.getAnOperand() = any(MacroInvocation m | m.getMacroName() = "SIG_ERR").getExpr() and
2828
(
2929
this.getOperator() = "==" and
30-
this.controls(errorSuccessor, true)
30+
super.controls(errorSuccessor, true)
3131
or
3232
this.getOperator() = "!=" and
33-
this.controls(errorSuccessor, false)
33+
super.controls(errorSuccessor, false)
3434
)
3535
}
3636

‎c/cert/src/rules/EXP30-C/DependenceOnOrderOfFunctionArgumentsForSideEffects.ql

Lines changed: 0 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -14,7 +14,6 @@
1414
import cpp
1515
import codingstandards.c.cert
1616
import codingstandards.cpp.SideEffect
17-
import semmle.code.cpp.dataflow.DataFlow
1817
import semmle.code.cpp.dataflow.TaintTracking
1918
import semmle.code.cpp.valuenumbering.GlobalValueNumbering
2019

‎c/cert/src/rules/EXP35-C/DoNotModifyObjectsWithTemporaryLifetime.ql

Lines changed: 5 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -13,15 +13,13 @@
1313

1414
import cpp
1515
import codingstandards.c.cert
16-
import codingstandards.cpp.lifetimes.CLifetimes
16+
import codingstandards.c.Objects
1717

1818
// Note: Undefined behavior is possible regardless of whether the accessed field from the returned
1919
// struct is an array or a scalar (i.e. arithmetic and pointer types) member, according to the standard.
20-
from FieldAccess fa, FunctionCall fc
20+
from FieldAccess fa, TemporaryObjectIdentity tempObject
2121
where
2222
not isExcluded(fa, InvalidMemory2Package::doNotModifyObjectsWithTemporaryLifetimeQuery()) and
23-
not fa.getQualifier().isLValue() and
24-
fa.getQualifier().getUnconverted() = fc and
25-
fa.getQualifier().getUnconverted().getUnspecifiedType() instanceof StructOrUnionTypeWithArrayField
26-
select fa, "Field access on $@ qualifier occurs after its temporary object lifetime.", fc,
27-
"function call"
23+
fa.getQualifier().getUnconverted() = tempObject
24+
select fa, "Field access on $@ qualifier occurs after its temporary object lifetime.", tempObject,
25+
"temporary object"

‎c/cert/src/rules/FIO37-C/SuccessfulFgetsOrFgetwsMayReturnAnEmptyString.ql

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@@ -14,7 +14,7 @@ import cpp
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import codingstandards.c.cert
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import codingstandards.cpp.FgetsErrorManagement
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import codingstandards.cpp.Dereferenced
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import semmle.code.cpp.dataflow.TaintTracking
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import semmle.code.cpp.dataflow.DataFlow
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/*
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* CFG nodes that follows a successful call to `fgets`

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