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This fixes an internal error in GAS, triggered by the test case reported in PR 16765.

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The problem was that gcc was generating assembler with missing unwind directives in it,
so that a gas_assert was being triggered.  The patch replaces the assert with an error
message.

	* config/tc-arm.c (create_unwind_entry): Report an error if an
	attempt to recreate an unwind directive is encountered.
This commit is contained in:
Nick Clifton 2014-04-02 16:29:35 +01:00
parent 7a79c51466
commit cad0da33dc
2 changed files with 13 additions and 2 deletions
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6
gas/ChangeLog
View File

@ -1,3 +1,9 @@
2014-04-02 Nick Clifton <nickc@redhat.com>
PR gas/16765
* config/tc-arm.c (create_unwind_entry): Report an error if an
attempt to recreate an unwind directive is encountered.
2014-03-27 Nick Clifton <nickc@redhat.com>
* config/tc-score.c (s3_parse_pce_inst): Add "%s" parameter to

9
gas/config/tc-arm.c
View File

@ -20992,7 +20992,7 @@ start_unwind_section (const segT text_seg, int idx)
/* Start an unwind table entry. HAVE_DATA is nonzero if we have additional
personality routine data. Returns zero, or the index table value for
and inline entry. */
an inline entry. */
static valueT
create_unwind_entry (int have_data)
@ -21063,7 +21063,12 @@ create_unwind_entry (int have_data)
}
else
{
gas_assert (unwind.personality_index == -1);
/* PR 16765: Missing or misplaced unwind directives can trigger this. */
if (unwind.personality_index != -1)
{
as_bad (_("attempt to recreate an unwind entry"));
return 1;
}
/* An extra byte is required for the opcode count. */
size = unwind.opcode_count + 1;