This is the mail archive of the
cygwin-cvs@cygwin.com
mailing list for the Cygwin project.
[newlib-cygwin] Cygwin: exceptions: fix FPE exception flags
- From: Corinna Vinschen <corinna at sourceware dot org>
- To: cygwin-cvs at sourceware dot org
- Date: 26 Jun 2018 08:15:30 -0000
- Subject: [newlib-cygwin] Cygwin: exceptions: fix FPE exception flags
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=dbe905c140d0cd347c731f63b153dca53857bdc9
commit dbe905c140d0cd347c731f63b153dca53857bdc9
Author: Corinna Vinschen <corinna@vinschen.de>
Date: Tue Jun 26 10:09:29 2018 +0200
Cygwin: exceptions: fix FPE exception flags
The FPE flags for divisions by zero were not implemented
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diff:
---
winsup/cygwin/exceptions.cc | 8 +++++++-
winsup/cygwin/release/2.11.0 | 3 +++
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/winsup/cygwin/exceptions.cc b/winsup/cygwin/exceptions.cc
index 77eff05..419b097 100644
--- a/winsup/cygwin/exceptions.cc
+++ b/winsup/cygwin/exceptions.cc
@@ -649,9 +649,15 @@ exception::handle (EXCEPTION_RECORD *e, exception_list *frame, CONTEXT *in,
/* Coerce win32 value to posix value. */
switch (e->ExceptionCode)
{
- case STATUS_FLOAT_DENORMAL_OPERAND:
case STATUS_FLOAT_DIVIDE_BY_ZERO:
+ si.si_signo = SIGFPE;
+ si.si_code = FPE_FLTDIV;
+ break;
+ case STATUS_FLOAT_DENORMAL_OPERAND:
case STATUS_FLOAT_INVALID_OPERATION:
+ si.si_signo = SIGFPE;
+ si.si_code = FPE_FLTINV;
+ break;
case STATUS_FLOAT_STACK_CHECK:
si.si_signo = SIGFPE;
si.si_code = FPE_FLTSUB;
diff --git a/winsup/cygwin/release/2.11.0 b/winsup/cygwin/release/2.11.0
index ef7d082..33f5fb9 100644
--- a/winsup/cygwin/release/2.11.0
+++ b/winsup/cygwin/release/2.11.0
@@ -33,3 +33,6 @@ Bug Fixes
- Fix a g++ compilation problem with -std=c++14 or -std=c++17.
Addresses: https://cygwin.com/ml/cygwin/2018-05/msg00316.html
+
+- Fix FPE flag handling for division by zero conditions
+ Addresses: https://cygwin.com/ml/cygwin/2018-06/msg00281.html