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Assertion failure dumping .eh_frame_hdr

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dwarf.c can hit "Assertion '(start) <= (end)' failed" on truncated
sections, due to get_encoded_eh_value wrongly returning a full count
for truncated words.

	* dwarf.c (get_encoded_eh_value): Return zero for truncated words.
This commit is contained in:
Alan Modra 2024-01-26 09:14:13 +10:30
parent 8409b75c8d
commit e14f7abaf8
1 changed files with 6 additions and 6 deletions
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12
binutils/dwarf.c
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@ -9236,37 +9236,37 @@ get_encoded_eh_value (unsigned int encoding,
case DW_EH_PE_udata2:
old_start = start;
SAFE_BYTE_GET_AND_INC (val, start, 2, end);
len = (start == old_start) ? 0 : 2;
len = start - old_start == 2 ? 2 : 0;
break;
case DW_EH_PE_udata4:
old_start = start;
SAFE_BYTE_GET_AND_INC (val, start, 4, end);
len = (start == old_start) ? 0 : 4;
len = start - old_start == 4 ? 4 : 0;
break;
case DW_EH_PE_udata8:
old_start = start;
SAFE_BYTE_GET_AND_INC (val, start, 8, end);
len = (start == old_start) ? 0 : 8;
len = start - old_start == 8 ? 8 : 0;
break;
case DW_EH_PE_sdata2:
old_start = start;
SAFE_SIGNED_BYTE_GET_AND_INC (val, start, 2, end);
len = (start == old_start) ? 0 : 2;
len = start - old_start == 2 ? 2 : 0;
break;
case DW_EH_PE_sdata4:
old_start = start;
SAFE_SIGNED_BYTE_GET_AND_INC (val, start, 4, end);
len = (start == old_start) ? 0 : 4;
len = start - old_start == 4 ? 4 : 0;
break;
case DW_EH_PE_sdata8:
old_start = start;
SAFE_SIGNED_BYTE_GET_AND_INC (val, start, 8, end);
len = (start == old_start) ? 0 : 8;
len = start - old_start == 8 ? 8 : 0;
break;
default: