You are welcome to try out Csmith 2.0.0 by generating the following random programs, and see how quickly they can break your compiler. All random programs are generated with command:
csmith --bitfields --packed-struct -s <seed>
If you are using gcc 3.2.2 (32-bit), the default compiler on Redhat 9:
| Seed | Symptom |
|---|---|
| 4085150455 | gcc crashes at -O0 |
| 3110802907 | gcc crashes at -O1 |
| 2120657167 | gcc crashes at -O2 |
| 3918660865 | gcc crashes at -O3 |
| 1849857627 | gcc crashes at -Os |
If you are using gcc 4.2.1 (32-bit), the default compiler on FreeBSD 9.0:
| Seed | Symptom |
|---|---|
| 1125565922 | gcc crashes at -O0 |
| 3565422777 | gcc crashes at -O1 |
| 938350729 | gcc crashes at -O2 |
| 1743340682 | gcc crashes at -O3 |
| 1849857627 | gcc crashes at -Os |
If you are using gcc 4.3.2 (32-bit), the default compiler on Fedora 10:
| Seed | Symptom |
|---|---|
| 2115379734 | gcc crashes at -O0 |
| 80122366 | gcc crashes at -O1 |
| 503418450 | gcc crashes at -O2 |
| 2115782314 | gcc crashes at -O3 |
| 1144081048 | gcc crashes at -Os |
If you are using gcc 4.4.3 (32-bit), the default compiler on Ubuntu 10.04.1:
| Seed | Symptom |
|---|---|
| 133910020 | gcc crashes at -O2 |
| 253603242 | gcc crashes at -O3 |
| 3230950649 | gcc crashes at -Os |
If you are using gcc 4.4.3 (64-bit), the default compiler on Ubuntu 10.04.1:
| Seed | Symptom |
|---|---|
| 1014372711 | gcc crashes at -O2 |
| 2569273905 | gcc crashes at -O3 |
| 2087907740 | gcc crashes at -Os |
| 2855047764 | gcc generates different checksums at -O0 and -O2 |