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[Bug optimization/12082] Inappropriate unreachable code warnings
- From: "augart at us dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Aug 2003 17:27:24 -0000
- Subject: [Bug optimization/12082] Inappropriate unreachable code warnings
- References: <20030827203936.12082.augart@us.ibm.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12082
------- Additional Comments From augart at us dot ibm dot com 2003-08-28 17:27 -------
Created an attachment (id=4673)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4673&action=view)
bad1.i: preprocessed C that triggers the problem.
preprocessed C that triggers the problem.
Here is the output from compiling bad1.i with gcc 3.3.1:
bilbo:~/JikesRVM/gccbug > cc --save-temps -v -Wunreachable-code -O3 -o bad1.S
-S bad1.i
Reading specs from /usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.3.1/specs
Configured with: ./configure --cache-file=config.cache
Thread model: posix
gcc version 3.3.1
/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.3.1/cc1 -fpreprocessed bad1.i
-quiet -dumpbase bad1.i -auxbase-strip bad1.S -O3 -Wunreachable-code -version
-o bad1.S
GNU C version 3.3.1 (i686-pc-linux-gnu)
compiled by GNU C version 3.3.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
bad1.c: In function `main':
bad1.c:13: warning: will never be executed
bilbo:~/JikesRVM/gccbug >