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[Qemu-devel] [Bug 1268596] Re: Compilation Error : hw/virtio/dataplane/v


From: DEnis
Subject: [Qemu-devel] [Bug 1268596] Re: Compilation Error : hw/virtio/dataplane/vring.c:400:5: error: ‘ret’ may be used uninitialised in this function
Date: Mon, 13 Jan 2014 14:08:38 -0000

** Description changed:

  Qemu git-cloned from mo. 13.01.14 (ca. 13:00 GMT), Version 1.7.50
- 
  
  #git clone git://git.qemu-project.org/qemu.git
  # cd qemu; git submodule update --init dtc
  #./configure --disable-xen --enable-kvm
  ...No Errors...
  
  #CC="ccache gcc" make -j8
  ....
-   GEN   qemu.1
-   Signing optionrom/kvmvapic.bin
-   GEN   qemu-img.1
-   CC    qapi-types.o
+   GEN   qemu.1
+   Signing optionrom/kvmvapic.bin
+   GEN   qemu-img.1
+   CC    qapi-types.o
  hw/virtio/dataplane/vring.c: In function ‘vring_pop’:
  hw/virtio/dataplane/vring.c:400:5: error: ‘ret’ may be used uninitialised in 
this function [-Werror=uninitialized]
  cc1: all warnings being treated as errors
  make: *** [hw/virtio/dataplane/vring.o] Error 1
  make: *** Waiting for unfinished jobs....
  
  
+ File hw/virtio/dataplane/vring.c:
+ ===========================================
+ out:
+     assert(ret < 0);                ----> Line: 400
+     if (ret == -EFAULT) {
+         vring->broken = true;
+     }
+     if (elem) {
+         vring_free_element(elem);
+     }
+     *p_elem = NULL;
+     return ret;
+ }
+ ===========================================
+ 
+ 
  Thx.

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https://bugs.launchpad.net/bugs/1268596

Title:
  Compilation Error: hw/virtio/dataplane/vring.c:400:5: error: ‘ret’ may
  be used uninitialised in this function

Status in QEMU:
  New

Bug description:
  Qemu git-cloned from mo. 13.01.14 (ca. 13:00 GMT), Version 1.7.50

  #git clone git://git.qemu-project.org/qemu.git
  # cd qemu; git submodule update --init dtc
  #./configure --disable-xen --enable-kvm
  ...No Errors...

  #CC="ccache gcc" make -j8
  ....
    GEN   qemu.1
    Signing optionrom/kvmvapic.bin
    GEN   qemu-img.1
    CC    qapi-types.o
  hw/virtio/dataplane/vring.c: In function ‘vring_pop’:
  hw/virtio/dataplane/vring.c:400:5: error: ‘ret’ may be used uninitialised in 
this function [-Werror=uninitialized]
  cc1: all warnings being treated as errors
  make: *** [hw/virtio/dataplane/vring.o] Error 1
  make: *** Waiting for unfinished jobs....


  File hw/virtio/dataplane/vring.c:
  ===========================================
  out:
      assert(ret < 0);                ----> Line: 400
      if (ret == -EFAULT) {
          vring->broken = true;
      }
      if (elem) {
          vring_free_element(elem);
      }
      *p_elem = NULL;
      return ret;
  }
  ===========================================

  
  Thx.

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