https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98983
Bug ID: 98983
Summary: SEGV during C++17 variadic template instantiation
Product: gcc
Version: 10.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ali...@she-devel.com
Target Milestone: ---
The code that causes the crash relies on GCC's typeclass.h and the folly
project's StaticTracepoint.h, which implements support for Linux BPF userspace
static tracing. I will attach the requested preprocessor output. The code
also crashes clang++. I do not work for F******k: this is my personal weekend
hack project.
$ make arg_classifier_lib_test
/usr/bin/g++ -std=c++17 -pthread -ggdb -Wall -Wextra -g -O0 -fno-inline
-fsanitize=address,undefined
-I/home/alison/gitsrc/googletest/googletest/include -ggdb -g -fsanitize=address
-L/home/alison/gitsrc/googletest/googletest/make -lpthread
-I/home/alison/gitsrc/gcc -I/home/alison/gitsrc/folly
/home/alison/gitsrc/googletest/googletest/make/libgtest.a
/home/alison/gitsrc/googletest/googletest/make/libgtest_main.a
/home/alison/gitsrc/fbcode-install/folly/lib/libfolly.a
/home/alison/gitsrc/fbcode-install/folly/lib/libfolly_test_util.a
arg_classifier_lib_test.cc -o arg_classifier_lib_test
In file included from
/home/alison/gitsrc/folly/folly/tracing/StaticTracepoint.h:22,
from arg_classifier.h:8,
from arg_classifier_lib_test.cc:12:
arg_classifier.h: In instantiation of ‘bool
arg_classify::maybe_insert_folly_sdt_probe(const char*, const char*, T, Pars
...) [with T = int; Pars = {int}]’:
arg_classifier_lib_test.cc:194:3: required from here
/home/alison/gitsrc/folly/folly/tracing/StaticTracepoint-ELFx86.h:53:65:
internal compiler error: Segmentation fault
