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From: "jakub at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c/18666] New: Conversion of floating point into bit-fields Date: Thu, 25 Nov 2004 00:32:00 -0000 [thread overview] Message-ID: <20041125003250.18666.jakub@gcc.gnu.org> (raw) Is /* { dg-do run } */ /* { dg-options "-std=c99 -pedantic-errors } */ struct A { unsigned int i : 1; } a; extern void abort (void); int main (void) { a.i = 16.0; if (a.i != 0) abort (); return 0; } a valid test or not? This worked with 3.4.x and earlier, but doesn't any longer. The question is mainly if the type of a.i for the 6.3.1.4/1 purposes is unsigned int (in this case it would be well-defined, 16 is representable in unsigned int and storing 16 into unsigned int i : 1 bitfield is defined), or if the type is integer type with precision 1. -- Summary: Conversion of floating point into bit-fields Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: jakub at gcc dot gnu dot org CC: aoliva at redhat dot com,gcc-bugs at gcc dot gnu dot org,joseph at codesourcery dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18666
next reply other threads:[~2004-11-25 0:32 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2004-11-25 0:32 jakub at gcc dot gnu dot org [this message] 2004-11-25 0:52 ` [Bug c/18666] " joseph at codesourcery dot com 2004-12-02 13:41 ` [Bug c/18666] [4.0 Regression] " pinskia at gcc dot gnu dot org 2004-12-23 20:25 ` aoliva at gcc dot gnu dot org
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