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Date: Sun, 05 Apr 2015 17:01:00 -0000
From: Jan Kratochvil <jan.kratochvil@redhat.com>
To: gdb-patches@sourceware.org
Cc: Phil Muldoon <pmuldoon@redhat.com>
Subject: cancel: [PATCH 4/4] compile: New 'compile print'
Message-ID: <20150405170125.GA8246@host1.jankratochvil.net>
References: <20150326205727.28223.54648.stgit@host1.jankratochvil.net> <20150326205752.28223.24230.stgit@host1.jankratochvil.net>
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On Thu, 26 Mar 2015 21:57:52 +0100, Jan Kratochvil wrote:
> +      fprintf_unfiltered (buf,
> +"__auto_type " COMPILE_I_EXPR_VAL " = %s;\n"
> +"typeof (%s) *" COMPILE_I_EXPR_PTR_TYPE ";\n"
> +"if (" COMPILE_I_PRINT_EXPR_TAKE_ADDRESS ")\n"
> +"\tmemcpy (" COMPILE_I_PRINT_OUT_ARG ", &" COMPILE_I_EXPR_VAL ",\n"
> +	   "sizeof (*" COMPILE_I_EXPR_PTR_TYPE "));\n"
> +"else\n"
> +"\tmemcpy (" COMPILE_I_PRINT_OUT_ARG ", "  COMPILE_I_EXPR_VAL ",\n"
> +	   "sizeof (*" COMPILE_I_EXPR_PTR_TYPE "));\n"
> +			  , input, input);

This cannot work, when trying to print struct variable GCC fails for the
second memcpy() with:
	gdb command line:7:2: error: cannot convert to a pointer type^M
It will need to perform two compilation steps (or just one if the first one is
the right kind).


Jan