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24768bfa37
Improve the position of the breakpoint to be set at a line of code that is less likely to be optimised out by the compiler. Setting the breakpoint at a place that can be easily optimised out by the compiler will cause the gdb script to fail as it cannot match the source code line to the compiled code. For this reason the breakpoint is now set at the fclose() call which is very unlikely to be optimised out or there might be a resource leak.
43 lines
1 KiB
Plaintext
43 lines
1 KiB
Plaintext
# test_zeroize.gdb
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#
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# This file is part of mbed TLS (https://tls.mbed.org)
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#
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# Copyright (c) 2017, ARM Limited, All Rights Reserved
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#
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# Purpose
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#
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# Run a test using the debugger to check that the mbedtls_zeroize() function in
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# utils.h is not being optimized out by the compiler. To do so, the script
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# loads the test program at programs/test/zeroize.c and sets a breakpoint at
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# the last return statement in the main(). When the breakpoint is hit, the
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# debugger manually checks the contents to be zeroized and checks that it is
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# actually cleared.
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#
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# Note: This test requires that the test program is compiled with -g3.
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set confirm off
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file ./programs/test/zeroize
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break zeroize.c:88
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set args ./programs/test/zeroize.c
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run
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set $i = 0
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set $len = sizeof(buf)
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set $buf = buf
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if exit_code != 0
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echo The program did not terminate correctly\n
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quit 1
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end
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while $i < $len
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if $buf[$i++] != 0
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echo The buffer at was not zeroized\n
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quit 1
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end
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end
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echo The buffer was correctly zeroized\n
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quit 0
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