r243163 - in /trunk/gcc: ChangeLog sreal.c sreal.h

[marxin@gcc.gnu.org]

Author: marxin
Date: Fri Dec  2 08:36:01 2016
New Revision: 243163

URL: https://gcc.gnu.org/viewcvs?rev=243163&root=gcc&view=rev
Log:
Fix runtime error: left shift of negative value (PR

	PR ipa/78555
	* sreal.c (sreal::to_int): Make absolute value before shifting.
	(sreal::operator/): Likewise.
	(sreal_verify_negative_division): New test.
	(void sreal_c_tests): Call the new test.
	* sreal.h (sreal::normalize_up): Use new SREAL_ABS and
	SREAL_SIGN macros.
	(sreal::normalize_down): Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/sreal.c
    trunk/gcc/sreal.h