Bug 88101 - using uninitialized local variable in math/test-tgmath
using uninitialized local variable in math/test-tgmath
Status: CLOSED ERRATA
Product: Red Hat Linux
Classification: Retired
Component: glibc (Show other bugs)
9
i386 Linux
medium Severity medium
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Assigned To: Jakub Jelinek
Brian Brock
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2003-04-05 13:28 EST by John Reiser
Modified: 2016-11-24 10:12 EST (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2003-04-09 15:21:39 EDT
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Description John Reiser 2003-04-05 13:28:26 EST
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 15:21:39 EDT
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

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