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Key: PCC-40
Type: Bug Bug
Status: Closed Closed
Resolution: Fixed
Priority: Major Major
Assignee: Anders Magnusson
Reporter: Henry Gebhardt
Votes: 0
Watchers: 0
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pcc

pcc doesn't compile due to warn_unused_result after gcc-4.3.3 upgrade

Created: 22/Feb/09 02:06 PM   Updated: 08/Aug/09 10:30 AM
Component/s: None
Affects Version/s: None
Fix Version/s: None

File Attachments: 1. Text File pcc-warn_unused_result.patch (2 kB)

Environment: gcc-4.3.3 on linux x86


 Description  « Hide
Hi, I recently upgraded gcc from 4.3.2 to 4.3.3, and now pcc no longer compiles due to 'warn_unused_result' treated as errors. The attached patch fixes it, although I am not sure if that is the right approach.

Also, there is another 'warn_unused_result' not treated as error at the very end here (not fixed by patch):
$ make
cd cc && make all
make[1]: Entering directory `/home/hsgg/pcc.git-cvs/cc'
cd cc; make all -w
make[2]: Entering directory `/home/hsgg/pcc.git-cvs/cc/cc'
gcc -DLIBEXECDIR=\"/usr/local/libexec/\" -DINCLUDEDIR=\"/usr/local/include/\" -DPCCINCDIR=\"/usr/local/lib/pcc/i686-pc-linux-gnu/0.9.9/include/\" -DPCCLIBDIR=\"/usr/local/lib/pcc/i686-pc-linux-gnu/0.9.9/lib/\" -Dos_linux -DTARGMACH=i386 -Dmach_i386 -I../.. -I../../os/linux -I../../mip -I../../arch/i386 -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror -c cc.c
gcc -DLIBEXECDIR=\"/usr/local/libexec/\" -DINCLUDEDIR=\"/usr/local/include/\" -DPCCINCDIR=\"/usr/local/lib/pcc/i686-pc-linux-gnu/0.9.9/include/\" -DPCCLIBDIR=\"/usr/local/lib/pcc/i686-pc-linux-gnu/0.9.9/lib/\" -Dos_linux -DTARGMACH=i386 -Dmach_i386 -I../.. -I../../os/linux -I../../mip -I../../arch/i386 -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror -c -o compat.o ../../mip/compat.c
gcc -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror cc.o compat.o -o pcc
make[2]: Leaving directory `/home/hsgg/pcc.git-cvs/cc/cc'
cd cpp; make all -w
make[2]: Entering directory `/home/hsgg/pcc.git-cvs/cc/cpp'
bison -y -d cpy.y
gcc -DCPP_DEBUG -I. -I../.. -I. -I../../mip -I../../arch/i386 -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror -c -o cpy.o y.tab.c
gcc -DCPP_DEBUG -I. -I../.. -I. -I../../mip -I../../arch/i386 -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror -c cpp.c
flex scanner.l
gcc -DCPP_DEBUG -I. -I../.. -I. -I../../mip -I../../arch/i386 -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror -c -o scanner.o lex.yy.c
gcc -DCPP_DEBUG -I. -I../.. -I. -I../../mip -I../../arch/i386 -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror -c -o compat.o ../../mip/compat.c
gcc -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror cpp.o cpy.o scanner.o compat.o -o cpp
make[2]: Leaving directory `/home/hsgg/pcc.git-cvs/cc/cpp'
cd ccom; make all -w
make[2]: Entering directory `/home/hsgg/pcc.git-cvs/cc/ccom'
gcc -DGCC_COMPAT -DPCC_DEBUG -Dos_linux -Dmach_i386 -D_ISOC99_SOURCE -I. -I. -I../.. -I../../mip -I../../arch/i386 -I../../os/linux -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror -DMKEXT -o mkext \
../../mip/mkext.c ../../arch/i386/table.c ../../mip/common.c
./mkext
rm -f mkext.o table.o common.o
gcc -DGCC_COMPAT -DPCC_DEBUG -Dos_linux -Dmach_i386 -D_ISOC99_SOURCE -I. -I. -I../.. -I../../mip -I../../arch/i386 -I../../os/linux -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror -c -o optim.o optim.c
bison -y -d cgram.y
conflicts: 2 shift/reduce
mv y.tab.c cgram.c
mv y.tab.h cgram.h
gcc -DGCC_COMPAT -DPCC_DEBUG -Dos_linux -Dmach_i386 -D_ISOC99_SOURCE -I. -I. -I../.. -I../../mip -I../../arch/i386 -I../../os/linux -g -O2 -Wall -Wmissing-prototypes -Wstrict-prototypes -Wshadow -Wsign-compare -Werror -c -o pftn.o pftn.c
flex scan.l
mv lex.yy.c scan.c
gcc -DGCC_COMPAT -DPCC_DEBUG -Dos_linux -Dmach_i386 -D_ISOC99_SOURCE -I. -I. -I../.. -I../../mip -I../../arch/i386 -I../../os/linux -g -O2 -c -o scan.o scan.c
lex.yy.c: In function 'yylex':
scan.l:219: warning: ignoring return value of 'fwrite', declared with attribute warn_unused_result trees.c
(...continues compiling...)

Thanks,
Henry

 All   Comments   Change History      Sort Order: Ascending order - Click to sort in descending order
Anders Magnusson made changes - 08/Aug/09 10:30 AM
Field Original Value New Value
Assignee Anders Magnusson [ ragge ]
Anders Magnusson made changes - 08/Aug/09 10:30 AM
Status Open [ 1 ] Closed [ 6 ]
Resolution Fixed [ 1 ]