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GParam: make G_PARAM_USER_MASK unsigned

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UBSan considers left-shifting a negative number to be undefined
behaviour (per
<http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_081.html> it is
implementation-defined in C89, but according to
<https://llvm.org/bugs/show_bug.cgi?id=17490> it is undefined in C99).

Signed-off-by: Simon McVittie <smcv@debian.org>
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=775510
Reviewed-by: Colin Walters
This commit is contained in:
Simon McVittie 2016-12-01 17:06:15 +00:00
parent d1d1aba3b4
commit 5e7eaaaaee
1 changed files with 1 additions and 1 deletions
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2
gobject/gparam.c
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@ -51,7 +51,7 @@
/* --- defines --- */
#define PARAM_FLOATING_FLAG 0x2
#define G_PARAM_USER_MASK (~0 << G_PARAM_USER_SHIFT)
#define G_PARAM_USER_MASK (~0U << G_PARAM_USER_SHIFT)
#define PSPEC_APPLIES_TO_VALUE(pspec, value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_PARAM_SPEC_VALUE_TYPE (pspec)))
/* --- prototypes --- */