From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.2) Gecko/20010701 Description of problem: Any -Ox with x > 0 together with -fPIC and -ggdb will make gcc(both 2.96.81 & 2.96.85) produce bad assembler code for the following c++ source: ---- start c++ ---- #include <queue> queue<int> qiDummy1; queue<int> qiDummy2; ---- end c++ ---- [~/work/gccbug] 16: gcc -v -c -fPIC -O3 -ggdb test.cpp Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-85) /usr/lib/gcc-lib/i386-redhat-linux/2.96/cpp0 -lang-c++ -D__GNUG__=2 -D__EXCEPTIONS -v -D__GNUC__=2 -D__GNUC_MINOR__=96 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem(posix) -D__OPTIMIZE__ -Acpu(i386) -Amachine(i386) -Di386 -D__i386 -D__i386__ -D__tune_i386__ -D__PIC__ -D__pic__ test.cpp /tmp/cctDAdBn.ii GNU CPP version 2.96 20000731 (Red Hat Linux 7.1 2.96-85) (cpplib) (i386 Linux/ELF) ignoring nonexistent directory "/usr/local/include" ignoring nonexistent directory "/usr/i386-redhat-linux/include" ignoring duplicate directory "/net/devdisk/linux/include" ignoring duplicate directory "/usr/lib/qt-2.3.0/include" #include "..." search starts here: #include <...> search starts here: . /net/devdisk/linux/include /usr/lib/qt-2.3.0/include /usr/include/g++-3 /usr/lib/gcc-lib/i386-redhat-linux/2.96/include /usr/include End of search list. /usr/lib/gcc-lib/i386-redhat-linux/2.96/cc1plus /tmp/cctDAdBn.ii -quiet -dumpbase test.cpp -ggdb -O3 -version -fPIC -o /tmp/ccaLb3DH.s GNU C++ version 2.96 20000731 (Red Hat Linux 7.1 2.96-85) (i386-redhat-linux) compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.1 2.96-85). as -V -Qy -o test.o /tmp/ccaLb3DH.s GNU assembler version 2.10.91 (i386-redhat-linux) using BFD version 2.10.91.0.2 /tmp/ccaLb3DH.s: Assembler messages: /tmp/ccaLb3DH.s:5349: Error: Rest of line ignored. First ignored character is `@'. (rune@ws002 21:07:30) [~/work/gccbug] 17: How reproducible: Always Steps to Reproduce: 1. Make test.cpp with the following contents > #include <queue> > > queue<int> qiDummy1; > queue<int> qiDummy2; 2. Try to compile file with 'gcc -c -fPIC -O3 -ggdb test.cpp' 3. Done Actual Results: Expected Results: Additional info: 1. Removing either -O, -fPIC or -ggdb should make the code snippet compile. 2. I haven't experienced this bug with any other STL container. 3. Occured with both 2.96.81 and 2.96.85
Cannot reproduce this with gcc-2.96-95.