diff options
author | Keith Packard <keithp@keithp.com> | 2008-09-07 21:46:45 -0700 |
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committer | Keith Packard <keithp@keithp.com> | 2008-09-07 21:46:45 -0700 |
commit | 9d7c43c9fe91f3e4b408f2535993e498fb322862 (patch) | |
tree | 6bfbbc5380e4dd60a1e39094381803da6b009b06 | |
parent | 308da05195844bddc171f048580f7bc291f1c358 (diff) |
xcb_mask must not be zero when n == 32.
left shift of a 32-bit value by 32 is undefined, don't try to use it.
-rw-r--r-- | aux/xcb_bitops.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/aux/xcb_bitops.h b/aux/xcb_bitops.h index 48c3401..a6872a1 100644 --- a/aux/xcb_bitops.h +++ b/aux/xcb_bitops.h @@ -51,7 +51,7 @@ _X_INLINE static uint32_t xcb_mask(uint32_t n) { - return (1 << n) - 1; + return n == 32 ? ~0 : (1 << n) - 1; } |