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Subjectcc1: error: unrecognized command line option "-Wno-maybe-uninitialized"
Hi Arnd,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 557ed56cc75e0a33c15ba438734a280bac23bd32
commit: a76bcf557ef408b368cf26f52a60865bfc27b632 Kbuild: enable -Wmaybe-uninitialized warning for "make W=1"
date: 9 weeks ago
config: x86_64-randconfig-s1-01131717 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
reproduce:
git checkout a76bcf557ef408b368cf26f52a60865bfc27b632
# save the attached .config to linux build tree
make ARCH=x86_64

All errors (new ones prefixed by >>):

cc1: warnings being treated as errors
drivers/gpu/drm/i915/intel_ringbuffer.c: In function 'intel_ring_setup_status_page':
drivers/gpu/drm/i915/intel_ringbuffer.c:438: error: 'mmio.reg' may be used uninitialized in this function
At top level:
>> cc1: error: unrecognized command line option "-Wno-maybe-uninitialized"
--
cc1: warnings being treated as errors
drivers/gpu/drm/i915/intel_csr.c: In function 'parse_csr_fw':
drivers/gpu/drm/i915/intel_csr.c:194: error: 'si' may be used uninitialized in this function
drivers/gpu/drm/i915/intel_csr.c:194: note: 'si' was declared here
At top level:
>> cc1: error: unrecognized command line option "-Wno-maybe-uninitialized"
--
cc1: warnings being treated as errors
drivers/gpu/drm/i915/intel_sprite.c: In function 'intel_check_sprite_plane':
drivers/gpu/drm/i915/intel_sprite.c:763: error: 'src_x' may be used uninitialized in this function
drivers/gpu/drm/i915/intel_sprite.c:763: error: 'src_y' may be used uninitialized in this function
drivers/gpu/drm/i915/intel_sprite.c:763: error: 'src_w' may be used uninitialized in this function
drivers/gpu/drm/i915/intel_sprite.c:763: error: 'src_h' may be used uninitialized in this function
At top level:
>> cc1: error: unrecognized command line option "-Wno-maybe-uninitialized"
--
cc1: warnings being treated as errors
drivers/gpu/drm/i915/intel_tv.c: In function 'intel_tv_detect':
drivers/gpu/drm/i915/intel_tv.c:1315: error: 'type' may be used uninitialized in this function
At top level:
>> cc1: error: unrecognized command line option "-Wno-maybe-uninitialized"
--
cc1: warnings being treated as errors
drivers/gpu/drm/i915/i915_gem_gtt.c: In function 'gen8_ggtt_insert_entries':
drivers/gpu/drm/i915/i915_gem_gtt.c:2341: error: 'gtt_entry' may be used uninitialized in this function
drivers/gpu/drm/i915/i915_gem_gtt.c: In function 'gen6_ggtt_insert_entries':
drivers/gpu/drm/i915/i915_gem_gtt.c:2438: error: 'gtt_entry' may be used uninitialized in this function
At top level:
>> cc1: error: unrecognized command line option "-Wno-maybe-uninitialized"
--
cc1: warnings being treated as errors
drivers/gpu/drm/i915/i915_gem.c: In function 'i915_gem_object_map':
drivers/gpu/drm/i915/i915_gem.c:2382: error: 'pgprot.pgprot' may be used uninitialized in this function
At top level:
>> cc1: error: unrecognized command line option "-Wno-maybe-uninitialized"

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