https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97471
Bug ID: 97471
Summary: ICE on using function-like macro as a non
function-like macro
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: gabravier at gmail dot com
Target Milestone: ---
#define a() b
a
This crashes GCC's preprocessor on current trunk (as of the 16th), with this
message :
<source>:2:1: internal compiler error: Segmentation fault
2 | a
| ^
0x19720a9 internal_error(char const*, ...)
???:0
0x19b406f _cpp_lex_direct
???:0
0x19b5ab5 _cpp_lex_token
???:0
0x77c4c0 c_lex_with_flags(tree_node**, unsigned int*, unsigned char*, int)
???:0
0x6eb1ae c_parser_peek_2nd_token(c_parser*)
???:0
0x721b39 c_parse_file()
???:0
0x78bdf2 c_common_parse_file()
???:0
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
GCC -v output :
Using built-in specs.
COLLECT_GCC=/opt/compiler-explorer/gcc-snapshot/bin/gcc
Target: x86_64-linux-gnu
Configured with: ../gcc-trunk-20201017/configure
--prefix=/opt/compiler-explorer/gcc-build/staging --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu --disable-bootstrap
--enable-multiarch --with-abi=m64 --with-multilib-list=m32,m64,mx32
--enable-multilib --enable-clocale=gnu --enable-languages=c,c++,fortran,ada,d
--enable-ld=yes --enable-gold=yes --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-linker-build-id --enable-lto
--enable-plugins --enable-threads=posix
--with-pkgversion=Compiler-Explorer-Build
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20201016 (experimental) (Compiler-Explorer-Build)
COLLECT_GCC_OPTIONS='-fdiagnostics-color=always' '-g' '-o' './output.s'
'-masm=intel' '-S' '-v' '-mtune=generic' '-march=x86-64' '-dumpdir' './'
/opt/compiler-explorer/gcc-trunk-20201017/bin/../libexec/gcc/x86_64-linux-gnu/11.0.0/cc1
-quiet -v -imultiarch x86_64-linux-gnu -iprefix
/opt/compiler-explorer/gcc-trunk-20201017/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/
<source> -quiet -dumpdir ./ -dumpbase output.c -dumpbase-ext .c -masm=intel
-mtune=generic -march=x86-64 -g -version -fdiagnostics-color=always -o
./output.s
GNU C17 (Compiler-Explorer-Build) version 11.0.0 20201016 (experimental)
(x86_64-linux-gnu)
compiled by GNU C version 7.5.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory
"/opt/compiler-explorer/gcc-trunk-20201017/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/../../../../x86_64-linux-gnu/include"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20201017/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/11.0.0/include"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring duplicate directory
"/opt/compiler-explorer/gcc-trunk-20201017/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/11.0.0/include-fixed"
ignoring nonexistent directory
"/opt/compiler-explorer/gcc-trunk-20201017/bin/../lib/gcc/../../lib/gcc/x86_64-linux-gnu/11.0.0/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/compiler-explorer/gcc-trunk-20201017/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/include
/opt/compiler-explorer/gcc-trunk-20201017/bin/../lib/gcc/x86_64-linux-gnu/11.0.0/include-fixed
/usr/local/include
/opt/compiler-explorer/gcc-trunk-20201017/bin/../lib/gcc/../../include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
GNU C17 (Compiler-Explorer-Build) version 11.0.0 20201016 (experimental)
(x86_64-linux-gnu)
compiled by GNU C version 7.5.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 129d0909b5f5d2346755498e10395559
