[parisc-linux] hppa gcc bug?

[Randolph Chung <randolph@tausq.org>]

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Looks like there's a strength-reduce optimization bug in g++-3.0.2 on
hppa....

Trying to compile qt-x11 gives a segmentation fault when compiling
src/kernel/qurl.cpp. (willy and lamont also saw this I believe...). Turning
off strength-reduction (-fno-strength-reduce) allows the file to
compile to completion.

It's dying inside a loop_iterations call, but I don't know enough to
say why...

Can someone more knowledgable please take a look?

Preprocessed source attached. Compilation flags:

g++ -D_REENTRANT -DQT_THREAD_SUPPORT -c -I/usr/X11R6/include
-I/usr/src/new/qt-x11-2.3.2/include -I/usr/X11R6/include -pipe
-fno-exceptions -O2 -Wall -Wpointer-arith -Wwrite-strings
-Wmissing-prototypes -fPIC -DQT_BUILTIN_GIF_READER=1 -DQT_XFT   
-o kernel/qurl.o kernel/qurl.cpp

This is using the latest binutils/gcc that are in the Debian archive.
(binutils 20011021 and gcc 3.0.2 w/ Alan's patches)

sh-2.05# gcc -v
Reading specs from /usr/lib/gcc-lib/hppa-linux/3.0.2/specs
Configured with: ../src/configure -v
--enable-languages=c,c++,f77,proto,objc --prefix=/usr
--infodir=/share/info --mandir=/share/man --enable-shared --with-gnu-as
--with-gnu-ld --with-system-zlib --enable-long-long --enable-nls
--without-included-gettext --disable-checking --enable-threads=posix
--with-cpp-install-dir=bin hppa-linux
Thread model: posix
gcc version 3.0.2 (Debian)

sh-2.05# ld -v
GNU ld version 2.11.92.0.10 20011021 Debian/GNU Linux

randolph
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