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[Mingw-notify] [ mingw-Bugs-873691 ] g77 (gcc 3.3.1) emit_swap_insn internal compiler error
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From: SourceForge.net <no...@so...> - 2004-01-09 21:01:11
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Bugs item #873691, was opened at 2004-01-10 00:05 Message generated for change (Comment added) made by dannysmith You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=102435&aid=873691&group_id=2435 Category: gcc Group: None >Status: Closed >Resolution: Fixed Priority: 5 Submitted By: Brett Olivier (bgoli) Assigned to: Danny Smith (dannysmith) Summary: g77 (gcc 3.3.1) emit_swap_insn internal compiler error Initial Comment: A specific combination (-O3 -funroll-loops - march=pentium3) of compiler flags causes g77 to fail with an internal compiler error with the attached routines Compile command: g77 -Wall -fno-second-underscore -O3 -funroll-loops - march=pentium3 -malign-double -fomit-frame-pointer -c specfun_error_func.f -o specfun_error_func.o Output: specfun_error_func.f: In subroutine `rmn2l': specfun_error_func.f:32: warning: `sw' might be used uninitialized in this funct ion specfun_error_func.f:38: warning: `lg' might be used uninitialized in this funct ion specfun_error_func.f:45: warning: `np' might be used uninitialized in this funct ion specfun_error_func.f:47: warning: `eps1' might be used uninitialized in this fun ction specfun_error_func.f:69: warning: `eps2' might be used uninitialized in this fun ction specfun_error_func.f:75: internal compiler error: in emit_swap_insn, at reg-stac k.c:987 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://www.mingw.org/bugs.shtml> for instructions. After playing around a bit I found the following two workarounds that allow me to compile these two functions. Current workaround (1) remove flag: -O3 ================= Compile command: g77 -Wall -fno-second-underscore -funroll-loops - march=pentium3 -malign-double -fomit-frame-pointer -c specfun_error_func.f -o specfun_error_func.o Output: compiles OK Current workaround (2) remove flags: -funroll-loops -march=pentium3 ================= Compile command: g77 -Wall -fno-second-underscore -O3 -malign-double - fomit-frame-pointer -c specfun_error_func.f -o specfun_error_func.o Output: compiles OK Environment ========= OS == Windows 2000 SP 5 gcc -v ====== Reading specs from c:/mingw/bin/../lib/gcc- lib/mingw32/3.3.1/specs Configured with: ../gcc/configure --with-gcc --with-gnu- ld --with-gnu-as --host= mingw32 --target=mingw32 --prefix=/mingw --enable- threads --disable-nls --enable -languages=c,c++,f77,objc,ada,java --disable-win32- registry --disable-shared --e nable-sjlj-exceptions --enable-libgcj --disable-java-awt - -without-x --enable-ja va-gc=boehm --disable-libgcj-debug --enable- interpreter --enable-hash-synchroniz ation Thread model: win32 gcc version 3.3.1 (mingw special 20030804-1) ld -v ==== GNU ld version 2.13.90 20030111 MinGW installer + updates =================== MinGW-3.1.0-1.exe binutils-2.13.90-20030111-1.tar.gz gcc-core-3.3.1-20030804-1.tar.gz gcc-g++-3.3.1-20030804-1.tar.gz gcc-g77-3.3.1-20030804-1.tar.gz mingw-runtime-3.2.tar.gz w32api-2.4.tar.gz ---------------------------------------------------------------------- >Comment By: Danny Smith (dannysmith) Date: 2004-01-10 09:45 Message: Logged In: YES user_id=11494 This is a gcc bug that is fixed in gcc 3.3.3 and trunck sources. Danny ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=102435&aid=873691&group_id=2435 |