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Bug 88101

Summary: using uninitialized local variable in math/test-tgmath
Product: [Retired] Red Hat Linux Reporter: John Reiser <jreiser>
Component: glibcAssignee: Jakub Jelinek <jakub>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 9CC: fweimer
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2003-04-09 19:21:39 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description John Reiser 2003-04-05 18:28:26 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.0) Gecko/20020529

Description of problem:
Uninitialized local variable 'c' is used in math/test-tgmath.c.
-----line 162
static void
F(compile_test) (void)
{
  TYPE a, b, c;
  int i;
  long int j;
  long long int k;

  a = cos (cos (x));
  b = acos (acos (a));
  a = sin (sin (x));
  b = asin (asin (a));
  a = tan (tan (x));
  b = atan (atan (a));
  c = atan2 (atan2 (a, c), atan2 (b, x));   ### 'c' read before written
-----

Version-Release number of selected component (if applicable):
glibc-2.3.2-11.9

How reproducible:
Always

Steps to Reproduce:
1.Examine source.
2.
3.
    

Actual Results:  At line 176, local variable 'c' is read and used as an actual
argument to atan2() before 'c' has a value.

Expected Results:  No use of uninitialized local variables.

Additional info:

Comment 1 Jakub Jelinek 2003-04-09 19:21:39 UTC
An errata has been issued which should help the problem described in this bug report. 
This report is therefore being closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, please follow the link below. You may reopen 
this bug report if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2003-136.html