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libdwarf: Fix a possible memory leak in dwarf_add_AT_location_expr().

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CID:		1193364
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Mark Johnston 2020-02-04 21:14:53 +00:00
parent 75bd29add2
commit e5551befe8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=357532
1 changed files with 3 additions and 1 deletions
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4
contrib/elftoolchain/libdwarf/dwarf_pro_attr.c
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@ -46,8 +46,10 @@ dwarf_add_AT_location_expr(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
at->at_attrib = attr;
at->at_expr = loc_expr;
if (_dwarf_expr_into_block(loc_expr, error) != DW_DLE_NONE)
if (_dwarf_expr_into_block(loc_expr, error) != DW_DLE_NONE) {
free(at);
return (DW_DLV_BADADDR);
}
at->u[0].u64 = loc_expr->pe_length;
at->u[1].u8p = loc_expr->pe_block;
if (loc_expr->pe_length <= UCHAR_MAX)