From valgrind(memcheck):
==2418== Invalid read of size 4
==2418== at 0x40054EC: ??? (in /lib/ld-uClibc-0.9.33.2.so)
==2418== Address 0x7d87a664 is on thread 1's stack
==2418== 20 bytes below stack pointer
Program received signal SIGTRAP, Trace/breakpoint trap.
0x040054ec in ?? ()
From the vgdb server:
(gdb) info reg
r10 0x7d87aa48 2106042952
r11 0x7d87a674 2106041972
r12 0x7d87a678 2106041976
sp 0x7d87a678 0x7d87a678
pc 0x40054ec 0x40054ec
So the description "20 bytes below stack pointer" is correct,
because ($sp - 0x7d87a664) = (0x7d87a678 - 0x7d87a664) = 0x14 = 20.
What was the instruction stream? Where is the output from
the next command that was requested in my earlier message:
(gdb) x/9i $pc-4*4
If the instruction at 0x040054ec is a 'ldr' fetch from memory
which uses address -996(r10), -16(r11), -20(r12), or -20(sp),
then that is the culprit, and it is a compiler error (or a logic
error if indexing an array with an index less than zero,
or a programmer error if the code was inlined assembly language.)
Also, were you able to install the debuginfo symbols for
/lib/ld-uClibc-0.9.33.2.so ?
(or, not strip the symbols from ld-uClibc ?)
It would be nice to correlate the instruction stream with the source code:
(gdb) bt
which should show function names, source file names, and line numbers.
This would make it easier to confirm the exact cause of the error.
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