From d3a7ef9aacb50cbcd85a34966da10304f048a576 Mon Sep 17 00:00:00 2001 From: Falk Hueffner Date: Thu, 20 May 2004 01:43:20 +0200 Subject: re PR other/15526 (-ftrapv aborts on 0 * (-1)) PR other/15526 * libgcc2.c (__mulvsi3): Fix overflow test. * gcc.dg/ftrapv-1.c: New test case. From-SVN: r82042 --- gcc/libgcc2.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'gcc/libgcc2.c') diff --git a/gcc/libgcc2.c b/gcc/libgcc2.c index 34171ad9002..8a953ea8b76 100644 --- a/gcc/libgcc2.c +++ b/gcc/libgcc2.c @@ -130,9 +130,7 @@ __mulvsi3 (Wtype a, Wtype b) { const DWtype w = (DWtype) a * (DWtype) b; - if (((a >= 0) == (b >= 0)) - ? (UDWtype) w > (UDWtype) (((DWtype) 1 << (WORD_SIZE - 1)) - 1) - : (UDWtype) w < (UDWtype) ((DWtype) -1 << (WORD_SIZE - 1))) + if ((Wtype) (w >> WORD_SIZE) != (Wtype) w >> (WORD_SIZE - 1)) abort (); return w; -- cgit v1.2.1