On Thu, Dec 21, 2017 at 7:54 AM, Pádraig Brady <[email protected]> wrote:
> Some initial test results. All tests pass on:
>
> x86_64 Fedora25 (+ASAN)
> ARMv7l ArchLinux
> sparc Solaris10
> aarch64 Centos7
On Fedora 27 x86_64, with gcc.git and UBSAN, I see many of these:
+ src/pr.c:2562:9: runtime error: pointer index expression with base
0x000002359840 overflowed to 0xffffffffd205680f9Pbj...
pr: test 9Pbj: stderr mismatch, comparing 9Pbj.1 (expected) and 9Pbj.E (actual)
*** 9Pbj.1 Thu Dec 21 11:26:25 2017
--- 9Pbj.E Thu Dec 21 11:26:25 2017
***************
*** 0 ****
--- 1 ----
Perhaps not surprisingly, that diagnostic points to this
declaration/assignment of "last":
static bool
print_stored (COLUMN *p)
{
COLUMN *q;
int line = p->current_line++;
char *first = &buff[line_vector[line]];
/* FIXME
UMR: Uninitialized memory read:
* This is occurring while in:
print_stored [pr.c:2239]
* Reading 4 bytes from 0x5148c in the heap.
* Address 0x5148c is 4 bytes into a malloc'd block at 0x51488 of
676 bytes
* This block was allocated from:
malloc [rtlib.o]
xmalloc [xmalloc.c:94]
init_store_cols [pr.c:1648]
*/
char *last = &buff[line_vector[line + 1]];
