This is the mail archive of the libc-alpha@sourceware.org mailing list for the glibc project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

[PATCH][BZ #5768 fix SIGFPE in isnan(0 for SNaN

From: Steven Munroe <munroesj at linux dot vnet dot ibm dot com>
To: GLIBC-alpha <libc-alpha at sources dot redhat dot com>, "Ryan S. Arnold" <rsa at us dot ibm dot com>
Date: Mon, 18 Feb 2008 17:27:05 -0600
Subject: [PATCH][BZ #5768 fix SIGFPE in isnan(0 for SNaN
Reply-to: munroesj at us dot ibm dot com

The attached patch fixes a problem we found in PPC where GCC4.1+ code
motion rearranges the inline asm macros for isnan(). GCC moves the
(x==x) after the original fpscr (with FE_INVALID enabled) is restored.
If a Signaling NaN is passed we will get a SIGFPE.

Attachment: ppc-isnan-20080218.txt
Description: Text document

Follow-Ups:
- Re: [PATCH][BZ #5768 fix SIGFPE in isnan(0 for SNaN
  - From: Daniel Jacobowitz

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]