https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121650
Bug ID: 121650
Summary: [ICE] internal compiler error: in
try_make_edge_direct_simple_call, at ipa-prop.cc:4052
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: njuwy at smail dot nju.edu.cn
Target Milestone: ---
Compiler Explorer: https://godbolt.org/z/Ph49hPcf7
The crash triggering program (compile with `gcc-16 -O2`):
```
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void process_func(void (*func)(void), int op);
__attribute__((target_clones("default", "sse4.2")))
void worker(void) {
const char format[] = "Value: %.2f";
char buffer[64];
float val = 42.0f;
int len = strfromf(buffer, sizeof(buffer), format, val);
if (len > 0 && len < sizeof(buffer)) {
puts(buffer);
}
}
__attribute__((target_clones("default", "avx", "avx2")))
void controller(void) {
static int count = 0;
if (++count % 2 == 0) {
process_func(worker, 1);
} else {
process_func(worker, 0);
}
}
void process_func(void (*func)(void), int op) {
if (op) {
size_t offset = op * 8;
char mempool[128];
memset(mempool, 0, sizeof(mempool));
mempool[offset] = 1;
if (mempool[offset]) func();
} else {
return;
}
}
int main(void) {
for (int i = 0; i < 3; ++i) {
controller();
}
return EXIT_SUCCESS;
}
```
The crash output:
```
during IPA pass: inline
<source>:38:1: internal compiler error: in try_make_edge_direct_simple_call, at
ipa-prop.cc:4052
38 | }
| ^
0x2562545 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
???:0
0x2557b66 internal_error(char const*, ...)
???:0
0xa0885e fancy_abort(char const*, int, char const*)
???:0
0xf23fb3 ipa_propagate_indirect_call_infos(cgraph_edge*, vec<cgraph_edge*,
va_heap, vl_ptr>*)
???:0
0xeecf9c inline_call(cgraph_edge*, bool, vec<cgraph_edge*, va_heap, vl_ptr>*,
int*, bool, bool*)
???:0
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.
Compiler returned: 1
```
