https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110086
Bug ID: 110086
Summary: ICE when optimization level is changed using optimize
attribute
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: senthil.thecoder at gmail dot com
Target Milestone: ---
Compiler crashes with an ICE for the below code.
Already seen in regression runs (gcc.c-torture/compile/pr104327.c, for e.g.).
$ cat optimize-attrib.c
void __attribute__((optimize("O0"))) foo() {
}
$ avr-gcc -mmcu=avr51 optimize-attrib.c -Os
optimize-attrib.c:1:1: internal compiler error: 'global_options' are modified
in local context
1 | void __attribute__((optimize("O0"))) foo() {
| ^~~~
0xd1288b cl_optimization_compare(gcc_options*, gcc_options*)
/home/toolsbuild/build/gcc/gcc/options-save.cc:13139
0x832d0c handle_optimize_attribute
/home/toolsbuild/code/gcc/gcc/c-family/c-attribs.cc:5689
0x6e8b58 decl_attributes(tree_node**, tree_node*, int, tree_node*)
/home/toolsbuild/code/gcc/gcc/attribs.cc:878
0x70fb4c start_function(c_declspecs*, c_declarator*, tree_node*)
/home/toolsbuild/code/gcc/gcc/c/c-decl.cc:10095
0x78eb0c c_parser_declaration_or_fndef
/home/toolsbuild/code/gcc/gcc/c/c-parser.cc:2742
0x797ec7 c_parser_external_declaration
/home/toolsbuild/code/gcc/gcc/c/c-parser.cc:1925
0x7987bd c_parser_translation_unit
/home/toolsbuild/code/gcc/gcc/c/c-parser.cc:1779
0x7987bd c_parse_file()
/home/toolsbuild/code/gcc/gcc/c/c-parser.cc:24657
0x813840 c_common_parse_file()
/home/toolsbuild/code/gcc/gcc/c-family/c-opts.cc:1248
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.
