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Fix range check in sigismember(3).

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This commit is contained in:
Jonas 'Sortie' Termansen 2014-02-01 16:13:03 +01:00
parent 6af85a5dd8
commit 5c58b65546
1 changed files with 2 additions and 2 deletions
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4
libc/signal/sigismember.cpp
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@ -1,6 +1,6 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
Copyright(C) Jonas 'Sortie' Termansen 2013, 2014.
This file is part of the Sortix C Library.
@ -29,7 +29,7 @@
extern "C" int sigismember(const sigset_t* set, int signum)
{
int max_signals = sizeof(set->__val) * 8;
if ( max_signals <= signum )
if ( signum < 0 || max_signals <= signum )
return errno = EINVAL, -1;
size_t which_byte = signum / 8;
size_t which_bit = signum % 8;