[Bug c/47518] New: va_arg causes segmentation fault in case of variable length argument
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47518 Summary: va_arg causes segmentation fault in case of variable length argument Product: gcc Version: 4.2.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassig...@gcc.gnu.org ReportedBy: jur.p...@gmail.com To reproduce: gcc -Wall -g aap.c a.out Output: Segmentation fault (core dumped) Valgrind output" ==4442== Memcheck, a memory error detector ==4442== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al. ==4442== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright info ==4442== Command: a.out ==4442== ==4442== Invalid read of size 1 ==4442==at 0x4C7E849: memcpy (mc_replace_strmem.c:482) ==4442==by 0x8048423: f (aap.c:19) ==4442==by 0x80484F4: main (aap.c:36) ==4442== Address 0x1ff is not stack'd, malloc'd or (recently) free'd Version information: Reading specs from /sysmnt/cadappl_linuxi386_nsvr1/gcc/4.2.2.1/bin/../lib/gcc/i686-pc-linux-gnu/4.2.2/specs Target: i686-pc-linux-gnu Configured with: /home/gcc/gcc/gcc-4.2.2.1/gcc-4.2.2.1/configure --prefix=/cadappl/gcc/4.2.2.1 --with-as=/cadappl/gcc/4.2.2.1/bin/as --with-ld=/cadappl/gcc/4.2.2.1/bin/ld --enable-__cxa_atexit --enable-threads=posix --with-march=i686 --with-tune=pentium4 --enable-languages=c,c++,fortran --with-gmp=/cadappl/gcc/4.2.2.1 --with-mpfr=/cadappl/gcc/4.2.2.1 Thread model: posix gcc version 4.2.2
[Bug c/47518] va_arg causes segmentation fault in case of variable length argument
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47518 --- Comment #1 from jur.pauw at gmail dot com 2011-01-28 15:26:41 UTC --- If gcc version 3.4.4 is used then the program executes correctly. Version information: Reading specs from /sysmnt/cadappl_linuxi386_nsvr1/gcc/3.4.4/bin/../lib/gcc/i686-pc-linux-gnu/3.4.4/specs Configured with: /home/gcc/gcc/gcc-3.4.4/gcc-3.4.4/configure --prefix=/cadappl/gcc/3.4.4 --enable-shared --enable-threads=posix --enable-__cxa_atexit --with-as=/cadappl/gcc/3.4.4/bin/as --with-ld=/cadappl/gcc/3.4.4/bin/ld --enable-languages=c,c++,f77,java Thread model: posix gcc version 3.4.4
[Bug c/47518] va_arg causes segmentation fault in case of variable length argument
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47518 --- Comment #4 from jur.pauw at gmail dot com 2011-01-28 15:54:10 UTC --- Created attachment 23156 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23156 preprocessed output that triggers va_arg segmentation fault
[Bug c/47518] va_arg causes segmentation fault in case of variable length argument
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47518 jur.pauw at gmail dot com changed: What|Removed |Added Version|4.2.2 |4.4.5 --- Comment #5 from jur.pauw at gmail dot com 2011-01-28 15:55:25 UTC --- Using built-in specs. Target: i686-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.4.4-14ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.4 --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --enable-targets=all --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu Thread model: posix gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5)
