https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91607
Bug ID: 91607
Summary: [9 regression] internal compiler error: in equal, at
cp/constexpr.c:1088
Product: gcc
Version: 9.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: h2+bugs at fsfe dot org
Target Milestone: ---
Created attachment 46787
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46787&action=edit
intermediate code generated from GCC7
Recently some tests in our CI have started to fail. I am pretty sure they did
not fail with 9.1.0; I can verify they do not fail with GCC7, GCC8 and GCC10.
I have attached intermediate code for our test case, generated with different
compiler versions and each tested also with different compiler versions.
The command to invoke is:
g++ -std=c++17 -fconcepts custom_alphabet_test_GCC7.ii
./gtest_project/src/gtest_project-build/googletest/libgtest.a
./gtest_project/src/gtest_project-build/googletest/libgtest_main.a
Results for intermediate code generated from GCC7:
* GCC7 builds
* GCC8 builds
* GCC9: internal compiler error: in nothrow_spec_p, at cp/except.c:1247
* GCC10: builds
Results for intermediate code generated from GCC8:
* GCC8 builds
* GCC9: internal compiler error: in equal, at cp/constexpr.c:1088
* GCC10: builds
Results for intermediate code generated from GCC9:
* GCC9: internal compiler error: in equal, at cp/constexpr.c:1088
* GCC10: builds
Results for intermediate code generated from GCC10:
* GCC10: builds
The exact compiler versions are:
g++7 (FreeBSD Ports Collection) 7.4.0
g++8 (FreeBSD Ports Collection) 8.3.0
g++9 (FreeBSD Ports Collection) 9.2.0
g++10 (FreeBSD Ports Collection) 10.0.0 20190818 (experimental)
