Fix to prevent undefined behavior.

e68c6c62 · Alan Mishchenko · d9e68f60 · e68c6c62
Commit e68c6c62 authored May 19, 2018 by Alan Mishchenko
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src/misc/vec/vecInt.h
+2 -2

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--- a/src/misc/vec/vecInt.h
+++ b/src/misc/vec/vecInt.h
@@ -127,7 +127,7 @@ static inline Vec_Int_t * Vec_IntStart( int nSize )
    Vec_Int_t * p;
    p = Vec_IntAlloc( nSize );
    p->nSize = nSize;
-    memset( p->pArray, 0, sizeof(int) * nSize );
+    if ( p->pArray ) memset( p->pArray, 0, sizeof(int) * nSize );
    return p;
 }
 static inline Vec_Int_t * Vec_IntStartFull( int nSize )
@@ -135,7 +135,7 @@ static inline Vec_Int_t * Vec_IntStartFull( int nSize )
    Vec_Int_t * p;
    p = Vec_IntAlloc( nSize );
    p->nSize = nSize;
-    memset( p->pArray, 0xff, sizeof(int) * nSize );
+    if ( p->pArray ) memset( p->pArray, 0xff, sizeof(int) * nSize );
    return p;
 }
 static inline Vec_Int_t * Vec_IntStartRange( int First, int Range )