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From: Andreas Schwab <schwab@suse.de>
To: Nick Roberts <nickrob@snap.net.nz>
Cc: gdb@sourceware.org
Subject: Re: Multiple breakpoints
References: <18420.39684.185853.891083@kahikatea.snap.net.nz>
X-Yow: Uh-oh!!  I'm having TOO MUCH FUN!!
Date: Thu, 03 Apr 2008 09:01:00 -0000
In-Reply-To: <18420.39684.185853.891083@kahikatea.snap.net.nz> (Nick Roberts's 	message of "Thu\, 3 Apr 2008 20\:53\:24 +1200")
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Nick Roberts <nickrob@snap.net.nz> writes:

> If I set a breakpoint on TRY_CATCH in gdb_evaluate_expression, I get
> multiple breakpoints:
>
>   gdb_evaluate_expression (struct expression *exp, struct value **value)
>   {
>     volatile struct gdb_exception except;
>
> ->  TRY_CATCH (except, RETURN_MASK_ERROR)
>       {
>         *value = evaluate_expression(exp);
>       }
>
>     if (except.reason < 0)
>       return 0;
>     return 1;
>   }
>
> where -> shows the breakpoint location.
>
>
> Is this to be expected?  The assembler looks like this:

TRY_CATCH expands to a loop, probably the loop condition has been
duplicated by the compiler.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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