Bug 174061
| Summary: | gcc internal error | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Frank Cusack <fcusack> | ||||
| Component: | gcc | Assignee: | Jakub Jelinek <jakub> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | |||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 3 | ||||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | i386 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | 4.0.1-4.fc4 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2005-11-29 10:04:19 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Created attachment 121436 [details]
preprocessor output
There's a second bug here:
> The bug is not reproducible, so it is likely a hardware or OS problem.
The bug is quite reproducible. Message-ID <438BA8FF.9080600>
on the gcc list says this is probably a bug in a RH patch.
As pointed out on gcc ml by Jim Wilson, you should file the PR in upstream database. Regarding the second problem, I can't reproduce it, for me it always prints that the bug is reproducable on gcc 3.4.x. The ICE is fixed in gcc 4.0.x. |
From Bugzilla Helper: User-Agent: Opera/8.5 (Macintosh; PPC Mac OS X; U; en) Description of problem: $ gcc -g -O2 -c -DSHOWBUG bug.c bug.c: In function `bug': bug.c:18: error: unrecognizable insn: (insn:HI 15 14 17 0 bug.c:16 (set (reg/f:SI 64) (const:SI (plus:SI (symbol_ref:SI ("foo") [flags 0x22] <var_decl 0xb7e4f1b0 foo>) (const_int 4 [0x4])))) -1 (nil) (nil)) bug.c:18: internal compiler error: in extract_insn, at recog.c:2083 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://bugzilla.redhat.com/bugzilla> for instructions. The bug is not reproducible, so it is likely a hardware or OS problem. Version-Release number of selected component (if applicable): gcc-3.4.4-2.fc3 How reproducible: Always Steps to Reproduce: 1. requires -O2 2. requires __thread variable 3. requires builtin memcpy() (using -fno-builtin avoids the bug) 4. requires 2 memcpy() statements Actual Results: gcc failed Expected Results: gcc should have succeeded Additional info: #include <string.h> /* memcpy() */ static #ifdef SHOWBUG __thread #endif int foo[2]; void bug(void) { int bar; (void) memcpy(&foo[0], &bar, sizeof(bar)); #ifdef SHOWBUG (void) memcpy(&foo[1], &bar, sizeof(bar)); #endif }