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From: Matheus Castanho <msc@linux.ibm.com>
To: libc-alpha@sourceware.org
Subject: [PATCH] Fix maybe-uninitialized error on powerpc
Date: Thu,  9 Jan 2020 15:27:05 -0300	[thread overview]
Message-ID: <20200109182705.5309-1-msc@linux.ibm.com> (raw)

The build has been failing on powerpc64le-linux-gnu with GCC 10
due to a maybe-uninitialized error:

../sysdeps/ieee754/dbl-64/mpa.c:875:6: error: ‘w.e’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
  875 |   EY -= EX;
      |      ^~

This commits adds proper initialization to avoid it.

Tested on powerpc64le.
---
 sysdeps/ieee754/dbl-64/mpa.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sysdeps/ieee754/dbl-64/mpa.c b/sysdeps/ieee754/dbl-64/mpa.c
index 3bb8bff90d..8ad0fc7535 100644
--- a/sysdeps/ieee754/dbl-64/mpa.c
+++ b/sysdeps/ieee754/dbl-64/mpa.c
@@ -895,6 +895,7 @@ SECTION
 __dvd (const mp_no *x, const mp_no *y, mp_no *z, int p)
 {
   mp_no w;
+  w.e = 0;
 
   if (X[0] == 0)
     Z[0] = 0;
-- 
2.21.1


             reply	other threads:[~2020-01-09 18:27 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-09 18:27 Matheus Castanho [this message]
2020-01-09 18:48 ` [PATCH] Fix maybe-uninitialized error on powerpc Joseph Myers
2020-01-13 13:47   ` Matheus Castanho

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