https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85425
Bug ID: 85425
Summary: gcc 6.2.1 fails to catch error in function calling
arguments
Product: gcc
Version: 6.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gerhard.heinzel at aei dot mpg.de
Target Milestone: ---
Created attachment 43953
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43953&action=edit
preprocessed single C input file
Dear gcc maintainers,
First let me say that I am a very happy and grateful user of gcc since about 25
years.
I program in C under Linux and try to encourage my students to do the same.
Such C programs are the workhorse of my physics research group, although I have
to admit that the younger students now prefer C++ which I never really got used
to.
Anyway, here is the bug:
The attached program, which is already reduced to a single file that
contains about 5% of the code of the full thing,
does _NOT_ trigger an error although in my opinion it should,
when compiled with
gcc-6 -Wall -Wextra -c fail_contour.i
A function is called with messed up order of parameters,
mixing int with double.
The function is declared and defined as
contour_point_t ghhrobust_search
(contour_point_t * p, contour_point_t plast, double ax, double ay, int type)
but called as
p = ghhrobust_search (ptrials, plast, type, ax, ay);
where the integer variable "type" is at position 3 instead of at the end.
gcc (version info below) does not catch this error, which
I consider a bug.
Possibly I made a stupid mistake, in which case I'd be
grateful for a short notice.
I have tried to follow the bug reporting instructions.
If this is a real problem, I'd of course be willing to
submit more information or try to reduce the problem further
to a minimal case, although I suspect that you are much better
at that than I am.
With best greetings and thanks for your support,
Gerhard Heinzel.
-----
Using built-in specs.
COLLECT_GCC=gcc-6
Target: x86_64-suse-linux
Configured with: ../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,fortran,ada,go --enable-offload-targets=hsa
--enable-checking=release --with-gxx-include-dir=/usr/include/c++/6
--enable-ssp --disable-libssp --disable-libvtv --disable-libcc1
--disable-plugin --with-bugurl=http://bugs.opensuse.org/
--with-pkgversion='SUSE Linux' --disable-libgcj --with-slibdir=/lib64
--with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-allocator=new
--disable-libstdcxx-pch --with-default-libstdcxx-abi=gcc4-compatible
--enable-version-specific-runtime-libs --enable-linker-build-id
--enable-linux-futex --enable-gnu-indirect-function --program-suffix=-6
--without-system-libunwind --enable-multilib --with-arch-32=x86-64
--with-tune=generic --build=x86_64-suse-linux --host=x86_64-suse-linux
Thread model: posix
gcc version 6.2.1 20160826 [gcc-6-branch revision 239773] (SUSE Linux)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-Wextra' '-c' '-mtune=generic'
'-march=x86-64'
/usr/lib64/gcc/x86_64-suse-linux/6/cc1 -E -quiet -v fail_contour.c
-mtune=generic -march=x86-64 -Wall -Wextra -fpch-preprocess -o fail_contour.i
#include "..." search starts here:
#include <...> search starts here:
/usr/lib64/gcc/x86_64-suse-linux/6/include
/usr/local/include
/usr/lib64/gcc/x86_64-suse-linux/6/include-fixed
/usr/lib64/gcc/x86_64-suse-linux/6/../../../../x86_64-suse-linux/include
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-Wextra' '-c' '-mtune=generic'
'-march=x86-64'
/usr/lib64/gcc/x86_64-suse-linux/6/cc1 -fpreprocessed fail_contour.i -quiet
-dumpbase fail_contour.c -mtune=generic -march=x86-64 -auxbase fail_contour
-Wall -Wextra -version -o fail_contour.s
GNU C11 (SUSE Linux) version 6.2.1 20160826 [gcc-6-branch revision 239773]
(x86_64-suse-linux)
compiled by GNU C version 6.2.1 20160826 [gcc-6-branch revision
239773], GMP version 5.1.3, MPFR version 3.1.2, MPC version 1.0.2, isl version
none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C11 (SUSE Linux) version 6.2.1 20160826 [gcc-6-branch revision 239773]
(x86_64-suse-linux)
compiled by GNU C version 6.2.1 20160826 [gcc-6-branch revision
239773], GMP version 5.1.3, MPFR version 3.1.2, MPC version 1.0.2, isl version
none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 9c15a1c4f36e0692cc50ecfa3c25d889
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-Wextra' '-c' '-mtune=generic'
'-march=x86-64'
/usr/lib64/gcc/x86_64-suse-linux/6/../../../../x86_64-suse-linux/bin/as -v
--64 -o fail_contour.o fail_contour.s
GNU assembler version 2.29.1 (x86_64-suse-linux) using BFD version (GNU
Binutils; openSUSE Leap 42.3) 2.29.1
COMPILER_PATH=/usr/lib64/gcc/x86_64-suse-linux/6/:/usr/lib64/gcc/x86_64-suse-linux/6/:/usr/lib64/gcc/x86_64-suse-linux/:/usr/lib64/gcc/x86_64-suse-linux/6/:/usr/lib64/gcc/x86_64-suse-linux/:/usr/lib64/gcc/x86_64-suse-linux/6/../../../../x86_64-suse-linux/bin/
LIBRARY_PATH=/usr/lib64/gcc/x86_64-suse-linux/6/:/usr/lib64/gcc/x86_64-suse-linux/6/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/usr/lib64/gcc/x86_64-suse-linux/6/../../../../x86_64-suse-linux/lib/:/usr/lib64/gcc/x86_64-suse-linux/6/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-Wextra' '-c' '-mtune=generic'
'-march=x86-64'
