[PATCH] Fix gdb.base/code_elim.exp failures for PowerPC 32-bit
Tue Jul 1 09:46:00 GMT 2014
Another case of slight variations between targets and compiler options.
gdb.base/code_elim.exp assumes the linker generates the same sections
for all architectures. For x86, this works fine and the testcase binary
code_elim2 contains the .data section to hold our initialized global int
For PowerPC 32-bit though, the small initialized global int variable is
sent to the .sdata section as an optimization. Since there is no more
data to store, the .data section doesn't get created.
GDB complains about the lack of such a section and expect doesn't like
seeing that warning, which results in a couple failures for powerpc.
One of them:
add-symbol-file gdb.base/code_elim2 0x200000 -s .data 0x210000 -s .bss
add symbol table from file "gdb.d/gdb.base/code_elim2" at^M
.text_addr = 0x200000^M
.data_addr = 0x210000^M
.bss_addr = 0x220000^M
(y or n) y^M
Reading symbols from gdb.base/code_elim2...warning: section .data not
found in gdb.base/code_elim2^M
(gdb) FAIL: gdb.base/code_elim.exp: order1: add-symbol-file code_elim2
I have tweaked the testcase sources a little to hold a bigger
initialized global variable, forcing the linker to create a regular
.data section in order to prevent GDB's warning. The testcase still runs
fine, but now PowerPC 32-bit sees full passes on this one.
I thought about tweaking the optimization options, but that would need
to be target-specific, which is more cumbersome.
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