https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121033
Bug ID: 121033
Summary: ICE on x86_64-linux-gnu: Segmentation fault with
invalid new-line in raw string delimiter
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: jiangchangwu at smail dot nju.edu.cn
Target Milestone: ---
Compiler Explorer: https://gcc.godbolt.org/z/M4MeqenqG
*******************************************************************************
gcc version:
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/home/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/16.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --disable-multilib --disable-bootstrap
--enable-languages=c,c++ --prefix=/home/software/gcc-trunk --enable-coverage
--disable-werror --enable-checking=yes
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 16.0.0 20250613 (experimental) (GCC)
*******************************************************************************
Program:
$ cat mutant.c
#define a(b, c) b##c
a(R, "")
*******************************************************************************
Command Lines:
$ gcc mutant.c
mutant.c:2:4: error: invalid new-line in raw string delimiter
2 | a(R, "")
| ^
mutant.c:2:1: error: unterminated raw string
mutant.c:2:1: internal compiler error: Segmentation fault
0x5554b38 internal_error(char const*, ...)
../../gcc/gcc/diagnostic-global-context.cc:517
0x21651ec crash_signal
../../gcc/gcc/toplev.cc:321
0x56925c4 paste_tokens
../../gcc/libcpp/macro.cc:1051
0x56958ed paste_all_tokens
../../gcc/libcpp/macro.cc:1150
0x56958ed cpp_get_token_1
../../gcc/libcpp/macro.cc:3028
0x119e5cc get_token
../../gcc/gcc/c-family/c-lex.cc:316
0x119f75b c_lex_with_flags(tree_node**, unsigned long*, unsigned char*, int)
../../gcc/gcc/c-family/c-lex.cc:579
0xff0c86 c_lex_one_token
../../gcc/gcc/c/c-parser.cc:329
0xff16da c_parser_peek_token(c_parser*)
../../gcc/gcc/c/c-parser.cc:533
0x10a15d8 c_parse_file()
../../gcc/gcc/c/c-parser.cc:30139
0x11d7aeb c_common_parse_file()
../../gcc/gcc/c-family/c-opts.cc:1385
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
