https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67741
Bug ID: 67741
Summary: Invalid built-in usage should not cause segmentation
fault in compiler
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: kostikbel at ukr dot net
Target Milestone: ---
Created attachment 36406
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36406&action=edit
Test case causing segfault
With gcc 5.2.0, on freebsd both x86_64 and armv6, the attached example
segfaults the compiler, if compiled with optimization:
x86_64:
pooma% /usr/local/opt/gcc-5.2.0/bin/gcc -O -c 1.c
1.c: In function 'cabsf':
1.c:6:22: warning: argument 'fc' doesn't match built-in prototype
struct singlecomplex fc ;
^
1.c:5:7: internal compiler error: Segmentation fault
float cabsf(fc)
^
0x9d4b5f crash_signal
../../gcc-5.2.0/gcc/toplev.c:383
0x69f835 mathfn_built_in_1
../../gcc-5.2.0/gcc/builtins.c:1969
0xad6d21 gimple_expand_builtin_cabs
../../gcc-5.2.0/gcc/tree-ssa-math-opts.c:1403
0xad6d21 execute
../../gcc-5.2.0/gcc/tree-ssa-math-opts.c:1584
Please submit a full bug report,
with preprocessed source if appropriate.
arm:
rp% /usr/local/bin/gcc5 -O -g -march=armv7-a -mfloat-abi=softfp -ffloat-store
-DNO_FUNCF -DNTESTS=1000000 -DNREGIONS=16 -DQUIET -DNO_FAIL -c /tmp/1.c
/tmp/1.c: In function 'cabsf':
/tmp/1.c:6:22: warning: argument 'fc' doesn't match built-in prototype
struct singlecomplex fc ;
^
/tmp/1.c:5:7: internal compiler error: Segmentation fault
float cabsf(fc)
^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
The code fragment is from the UCBTEST http://www.netlib.org/fp/ucbtest.tgz
Apparently, gcc 5.1.1 from fc22 also segfaults on the sample.
