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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug analyzer/107750] [13/14/15 Regression] Many
 gcc.dg/analyzer/fd-*.c tests FAIL
Date: Mon, 13 May 2024 14:57:55 +0000
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X-Bugzilla-Keywords: testsuite-fail
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107750

--- Comment #7 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot U=
ni-Bielefeld.DE> ---
I think I've found what's going on: <sys/socket.h> really has

#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
#ifndef NC_TPI_CLTS
#define NC_TPI_CLTS     1               /* must agree with netconfig.h */
#define NC_TPI_COTS     2               /* must agree with netconfig.h */
[...]
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
#define SOCK_STREAM     NC_TPI_COTS     /* stream socket */
#define SOCK_DGRAM      NC_TPI_CLTS     /* datagram socket */
[...]
#else
#define SOCK_STREAM     2               /* stream socket */
#define SOCK_DGRAM      1               /* datagram socket */

The problem seems to be the indirection: when SOCK_DGRAM etc. are
defined as numeric constants, things work, while the indirection via
NC_TPI_* does not.=