http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59122
Bug ID: 59122
Summary: libsanitizer merge from upstream r191666 causes
duplicate symbol errors
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: bergner at gcc dot gnu.org
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
After the bootstrap issue from PR59009 was fixed, I'm now seeing other fallout
from the upstream libsanitizer merge.
[bergner@igoo asan]$ cat foo.i
extern int printf(const char *format, ...);
void
Child (void)
{
char x[32] = {0};
printf ("Child: \n", x);
}
int
main (void)
{
return 0;
}
[bergner@igoo asan]$ /home/bergner/gcc/build/gcc-fsf-mainline-asan/gcc/xgcc
-B/home/bergner/gcc/build/gcc-fsf-mainline-asan/gcc/ -fsanitize=address -O1
-m32 -c foo.i
/tmp/ccadY6mS.s: Assembler messages:
/tmp/ccadY6mS.s:136: Error: symbol `.LASANPC0' is already defined
The duplicate symbol is coming from:
void
asan_function_start (void)
{
section *fnsec = function_section (current_function_decl);
switch_to_section (fnsec);
ASM_OUTPUT_DEBUG_LABEL (asm_out_file, "LASANPC",
current_function_funcdef_no);
}
It seems current_function_funcdef_no isn't being incremented when we expected
it to be.
