https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101131
Bug ID: 101131
Summary: ICE with -O2: in noninterposable_alias, at
symtab.c:2011
Product: gcc
Version: tree-ssa
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: cnsun at uwaterloo dot ca
Target Milestone: ---
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /tmp/tmp.M5bbDhYIJL-gcc-builder/gcc/configure
--enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch
--prefix=/scratch/software/gcc-trunk --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20210618 (experimental) [master revision
:9f6824b35:688359a27d835bbdab554fdf5eb207f1bd678371] (GCC)
$ cat mutant.c
extern_declared_variable;
global_defined_function() { static_function(); }
__attribute__((ifunc("resolver"))) static_function() {
if (extern_declared_variable)
return global_defined_function();
}
$ gcc-trunk -O2 mutant.c
mutant.c:1:1: warning: data definition has no type or storage class
1 | extern_declared_variable;
| ^~~~~~~~~~~~~~~~~~~~~~~~
mutant.c:1:1: warning: type defaults to ‘int’ in declaration of
‘extern_declared_variable’ [-Wimplicit-int]
mutant.c:2:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
2 | global_defined_function() { static_function(); }
| ^~~~~~~~~~~~~~~~~~~~~~~
mutant.c: In function ‘global_defined_function’:
mutant.c:2:29: warning: implicit declaration of function ‘static_function’
[-Wimplicit-function-declaration]
2 | global_defined_function() { static_function(); }
| ^~~~~~~~~~~~~~~
mutant.c: At top level:
mutant.c:3:36: warning: return type defaults to ‘int’ [-Wimplicit-int]
3 | __attribute__((ifunc("resolver"))) static_function() {
| ^~~~~~~~~~~~~~~
mutant.c:3:36: warning: ‘alias’ attribute ignored because function is defined
[-Wattributes]
during IPA pass: whole-program
mutant.c:6:1: internal compiler error: in noninterposable_alias, at
symtab.c:2011
6 | }
| ^
0x695a35 symtab_node::noninterposable_alias()
/tmp/tmp.M5bbDhYIJL-gcc-builder/gcc/gcc/symtab.c:2011
0x19fd08f function_and_variable_visibility
/tmp/tmp.M5bbDhYIJL-gcc-builder/gcc/gcc/ipa-visibility.c:773
0x19fd6ca whole_program_function_and_variable_visibility
/tmp/tmp.M5bbDhYIJL-gcc-builder/gcc/gcc/ipa-visibility.c:921
0x19fd6ca execute
/tmp/tmp.M5bbDhYIJL-gcc-builder/gcc/gcc/ipa-visibility.c:969
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.
