include/hw/virtio/virtio-gpu.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
Avoid using trivial variable names in macros, otherwise we get
the following compiler warning when compiling with -Wshadow=local:
In file included from ../../qemu/hw/display/virtio-gpu-virgl.c:19:
../../home/thuth/devel/qemu/hw/display/virtio-gpu-virgl.c:
In function ‘virgl_cmd_submit_3d’:
../../qemu/include/hw/virtio/virtio-gpu.h:228:16: error: declaration of ‘s’
shadows a previous local [-Werror=shadow=compatible-local]
228 | size_t s;
| ^
../../qemu/hw/display/virtio-gpu-virgl.c:215:5: note: in expansion of macro
‘VIRTIO_GPU_FILL_CMD’
215 | VIRTIO_GPU_FILL_CMD(cs);
| ^~~~~~~~~~~~~~~~~~~
../../qemu/hw/display/virtio-gpu-virgl.c:213:12: note: shadowed declaration
is here
213 | size_t s;
| ^
cc1: all warnings being treated as errors
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
v2: Renamed the variable to something even less trivial
include/hw/virtio/virtio-gpu.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index 390c4642b8..4739fa4689 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -225,13 +225,13 @@ struct VhostUserGPU {
};
#define VIRTIO_GPU_FILL_CMD(out) do { \
- size_t s; \
- s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 0, \
+ size_t virtiogpufillcmd_s_ = \
+ iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 0, \
&out, sizeof(out)); \
- if (s != sizeof(out)) { \
+ if (virtiogpufillcmd_s_ != sizeof(out)) { \
qemu_log_mask(LOG_GUEST_ERROR, \
"%s: command size incorrect %zu vs %zu\n", \
- __func__, s, sizeof(out)); \
+ __func__, virtiogpufillcmd_s_, sizeof(out)); \
return; \
} \
} while (0)
--
2.41.0
Thomas Huth <thuth@redhat.com> writes: > Avoid using trivial variable names in macros, otherwise we get > the following compiler warning when compiling with -Wshadow=local: > > In file included from ../../qemu/hw/display/virtio-gpu-virgl.c:19: > ../../home/thuth/devel/qemu/hw/display/virtio-gpu-virgl.c: > In function ‘virgl_cmd_submit_3d’: > ../../qemu/include/hw/virtio/virtio-gpu.h:228:16: error: declaration of ‘s’ > shadows a previous local [-Werror=shadow=compatible-local] > 228 | size_t s; > | ^ > ../../qemu/hw/display/virtio-gpu-virgl.c:215:5: note: in expansion of macro > ‘VIRTIO_GPU_FILL_CMD’ > 215 | VIRTIO_GPU_FILL_CMD(cs); > | ^~~~~~~~~~~~~~~~~~~ > ../../qemu/hw/display/virtio-gpu-virgl.c:213:12: note: shadowed declaration > is here > 213 | size_t s; > | ^ > cc1: all warnings being treated as errors > > Signed-off-by: Thomas Huth <thuth@redhat.com> Queued. Thanks!
On Mon, Oct 09, 2023 at 10:45:59AM +0200, Thomas Huth wrote: > Avoid using trivial variable names in macros, otherwise we get > the following compiler warning when compiling with -Wshadow=local: > > In file included from ../../qemu/hw/display/virtio-gpu-virgl.c:19: > ../../home/thuth/devel/qemu/hw/display/virtio-gpu-virgl.c: > In function ‘virgl_cmd_submit_3d’: > ../../qemu/include/hw/virtio/virtio-gpu.h:228:16: error: declaration of ‘s’ > shadows a previous local [-Werror=shadow=compatible-local] > 228 | size_t s; > | ^ > ../../qemu/hw/display/virtio-gpu-virgl.c:215:5: note: in expansion of macro > ‘VIRTIO_GPU_FILL_CMD’ > 215 | VIRTIO_GPU_FILL_CMD(cs); > | ^~~~~~~~~~~~~~~~~~~ > ../../qemu/hw/display/virtio-gpu-virgl.c:213:12: note: shadowed declaration > is here > 213 | size_t s; > | ^ > cc1: all warnings being treated as errors > > Signed-off-by: Thomas Huth <thuth@redhat.com> > --- > v2: Renamed the variable to something even less trivial > > include/hw/virtio/virtio-gpu.h | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Apropos why is this header not in include/hw/display/ > diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h > index 390c4642b8..4739fa4689 100644 > --- a/include/hw/virtio/virtio-gpu.h > +++ b/include/hw/virtio/virtio-gpu.h > @@ -225,13 +225,13 @@ struct VhostUserGPU { > }; > > #define VIRTIO_GPU_FILL_CMD(out) do { \ > - size_t s; \ > - s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 0, \ > + size_t virtiogpufillcmd_s_ = \ > + iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 0, \ > &out, sizeof(out)); \ > - if (s != sizeof(out)) { \ > + if (virtiogpufillcmd_s_ != sizeof(out)) { \ > qemu_log_mask(LOG_GUEST_ERROR, \ > "%s: command size incorrect %zu vs %zu\n", \ > - __func__, s, sizeof(out)); \ > + __func__, virtiogpufillcmd_s_, sizeof(out)); \ > return; \ > } \ > } while (0) > -- > 2.41.0
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