| From 5c45de21a2223fe46cf9488c99a7fbcf01527670 Mon Sep 17 00:00:00 2001 |
| From: Linus Torvalds <torvalds@linux-foundation.org> |
| Date: Sat, 9 May 2020 14:30:29 -0700 |
| Subject: gcc-10: disable 'zero-length-bounds' warning for now |
| |
| From: Linus Torvalds <torvalds@linux-foundation.org> |
| |
| commit 5c45de21a2223fe46cf9488c99a7fbcf01527670 upstream. |
| |
| This is a fine warning, but we still have a number of zero-length arrays |
| in the kernel that come from the traditional gcc extension. Yes, they |
| are getting converted to flexible arrays, but in the meantime the gcc-10 |
| warning about zero-length bounds is very verbose, and is hiding other |
| issues. |
| |
| I missed one actual build failure because it was hidden among hundreds |
| of lines of warning. Thankfully I caught it on the second go before |
| pushing things out, but it convinced me that I really need to disable |
| the new warnings for now. |
| |
| We'll hopefully be all done with our conversion to flexible arrays in |
| the not too distant future, and we can then re-enable this warning. |
| |
| Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| Makefile | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| --- a/Makefile |
| +++ b/Makefile |
| @@ -857,6 +857,9 @@ KBUILD_CFLAGS += -Wno-pointer-sign |
| # disable stringop warnings in gcc 8+ |
| KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation) |
| |
| +# We'll want to enable this eventually, but it's not going away for 5.7 at least |
| +KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds) |
| + |
| # Enabled with W=2, disabled by default as noisy |
| KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized) |
| |
