Hello,
if one wants to use the sanitizer features of the C compiler, what is the
suggested way?
If I e.g. compile and link with options
-O2 -g -O0 -fno-omit-frame-pointer -fno-optimize-sibling-calls -Wall -Wextra
-Wsign-compare -Wcast-align -Wcast-qual -Wmissing-prototypes -Wunused-parameter
-Wunused-function -Wshadow -fno-common -fsanitize=address -fsanitize=undefined
-fsanitize=float-divide-by-zero -fsanitize=float-cast-overflow
(-O2 is from CFLAGS which should be reset by -O0)
I get something like
ui.c:2017:11: runtime error: member access within misaligned address
0xbebebebebebebebe for type 'struct filediff', which requires 8 byte alignment
0xbebebebebebebebe: note: pointer points here
test
<memory cannot be printed>
ASAN:SIGSEGV
=================================================================
==1372==ERROR: AddressSanitizer: SEGV on unknown address 0x72d42a8a5000 (pc
0x0000004229c5 bp 0x7f7fff49c710 sp 0x7f7fff49c460 T0)
#0 0x4229c4 (<unknown module>)
#1 0x421dd7 (<unknown module>)
#2 0x44b9be (<unknown module>)
#3 0x42a329 (<unknown module>)
#4 0x4488ad (<unknown module>)
#5 0x413a90 (<unknown module>)
#6 0x410e02 (<unknown module>)
#7 0x4054ae (<unknown module>)
#8 0x4044ba (<unknown module>)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV ??:0 ??
==1372==ABORTING
on errors. What needs to be configured to make the symbolizer work? (Binary
is not stripped.)
Carsten
