Hi

I got this error when trying to debug a problem in haproxy

compile haproxy using clang with -fsanitize=address and start haproxy:


=================================================================
==27669==ERROR: AddressSanitizer: global-buffer-overflow on address 
0x0000019795c8 at pc 0xb28240 bp 0x7ffd7682c2d0 sp 0x7ffd7682c2c8
READ of size 8 at 0x0000019795c8 thread T0
    #0 0xb2823f in main src/haproxy.c:2710
    #1 0x7fb34cee8444 in __libc_start_main 
/usr/src/debug/glibc-2.17-c758a686/csu/../csu/libc-start.c:274
    #2 0x49299c in _start (haproxy+0x49299c)

0x0000019795c8 is located 56 bytes to the left of global variable 
'__initcb_509' from 'src/task.c' (0x1979600) of size 8
0x0000019795c8 is located 0 bytes to the right of global variable 
'__initcb_1860' from 'src/log.c' (0x19795c0) of size 8
SUMMARY: AddressSanitizer: global-buffer-overflow src/haproxy.c:2710 main
Shadow bytes around the buggy address:
  0x000080327260: 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
  0x000080327270: 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
  0x000080327280: 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
  0x000080327290: 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
  0x0000803272a0: 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
=>0x0000803272b0: 00 f9 f9 f9 f9 f9 f9 f9 00[f9]f9 f9 f9 f9 f9 f9
  0x0000803272c0: 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
  0x0000803272d0: 00 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
  0x0000803272e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0000803272f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x000080327300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:     fa
  Heap right redzone:    fb
  Freed heap region:     fd
  Stack left redzone:    f1
  Stack mid redzone:     f2
  Stack right redzone:   f3
  Stack partial redzone: f4
  Stack after return:    f5
  Stack use after scope: f8
  Global redzone:        f9
  Global init order:     f6
  Poisoned by user:      f7
  ASan internal:         fe
==27669==ABORTING


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