http://llvm.org/bugs/show_bug.cgi?id=22726
Bug ID: 22726
Summary: False positive on loop with complex condition
Product: clang
Version: 3.5
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Static Analyzer
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 13957
--> http://llvm.org/bugs/attachment.cgi?id=13957&action=edit
False positive case
Analyzer reports garbage for initialized variable:
clang --analyze -Xanalyzer -analyzer-output=text source.c
source.c:18:18: warning: The left operand of '!=' is a garbage value
if(result[i] != 0)
~~~~~~~~~ ^
source.c:6:14: note: Assuming 'i' is >= 'count1'
for(i = 0; i < count1; i++)
^~~~~~~~~~
source.c:6:3: note: Loop condition is false. Execution continues on line 11
for(i = 0; i < count1; i++)
^
source.c:11:3: note: Loop condition is false. Execution continues on line 16
for(i = count1; i < count2; i++)
^
source.c:16:3: note: Loop condition is true. Entering loop body
for(i = 0; i < count1 + count2; i++)
^
source.c:18:18: note: The left operand of '!=' is a garbage value
if(result[i] != 0)
~~~~~~~~~ ^
1 warning generated.
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