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From: "evstupac at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/66835] New: C++ openMP test failed after switching to C++14
Date: Fri, 10 Jul 2015 19:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66835

            Bug ID: 66835
           Summary: C++ openMP test failed after switching to C++14
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: evstupac at gmail dot com
  Target Milestone: ---

The following test:
#define max(a, b)   ( (a) > (b) ? (a) : (b) ) 

float a[4] = {0, -1.2, 7, 0.1}; 

int main() 
{ 
#pragma omp simd 
  for (int j = 0; j < 4; j++) 
    { 
      float t1 = 0.1; 
      a[j] = max(t1, a[j]); 
    } 
  return (int)(a[1] - a[3]); 
} 

fails with ICE after recent switch to std=c++14

Compiled with "-O2 -flto -fopenmp -std=c++14"

The test began to fail after:
commit 23a92fc764dc04a0248a570bba74db0a7f7d843d
Author: tbsaunde <tbsaunde@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Tue Nov 11 02:31:00 2014 +0000