https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104705
Bug ID: 104705
Summary: [12 regression] ICE ‘global_options’ are modified in
local context in cl_optimization_compare
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: slyfox at gcc dot gnu.org
CC: mliska at suse dot cz
Target Milestone: ---
Tried to build ghc-HEAD with gcc-master today, got an ICE on pragmas in
intrisics.
Here is a small reproducer (I think I lost real "optimize" value during
shrinking, does it matter much for this ICE?):
//$ cat a.c
#pragma GCC optimize "foo"
#pragma GCC push_options
#pragma GCC pop_options
$ /tmp/bg/gcc/xgcc -B/tmp/bg/gcc -c a.c -O2 -Wall
a.c:1:9: warning: bad option ‘-ffoo’ to pragma ‘optimize’ [-Wpragmas]
1 | #pragma GCC optimize "foo"
| ^~~
a.c:3:9: internal compiler error: ‘global_options’ are modified in local
context
3 | #pragma GCC pop_options
| ^~~
0xccf111 cl_optimization_compare(gcc_options*, gcc_options*)
/tmp/bg/gcc/options-save.cc:15919
0x7ca26f handle_pragma_pop_options
/home/slyfox/dev/git/gcc/gcc/c-family/c-pragma.cc:1141
0x7cd42e c_invoke_pragma_handler(unsigned int)
/home/slyfox/dev/git/gcc/gcc/c-family/c-pragma.cc:1569
0x72a4ca c_parser_pragma
/home/slyfox/dev/git/gcc/gcc/c/c-parser.cc:12621
0x7555e7 c_parser_external_declaration
/home/slyfox/dev/git/gcc/gcc/c/c-parser.cc:1760
0x75596a c_parser_translation_unit
/home/slyfox/dev/git/gcc/gcc/c/c-parser.cc:1652
0x75596a c_parse_file()
/home/slyfox/dev/git/gcc/gcc/c/c-parser.cc:23357
0x7c7e81 c_common_parse_file()
/home/slyfox/dev/git/gcc/gcc/c-family/c-opts.cc:1238
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.
$ /tmp/bg/gcc/xgcc -B/tmp/bg/gcc -v
Reading specs from /tmp/bg/gcc/specs
COLLECT_GCC=/tmp/bg/gcc/xgcc
COLLECT_LTO_WRAPPER=/tmp/bg/gcc/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /home/slyfox/dev/git/gcc/configure --disable-multilib
--disable-bootstrap
--with-native-system-header-dir=/<<NIX>>/glibc-2.33-108-dev/include
--prefix=/tmp/bg/__td__ CFLAGS='-O1 -ggdb3' CXXFLAGS='-O1 -ggdb3' LDFLAGS='-O1
-ggdb3'
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.1 20220226 (experimental) (GCC)
