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ubsan: size_inc_line_addr integer overflow

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Fix a fuzzer testcase where a large positive line_delta causes signed
overflow when subtracting -5.  Signed overflow is perfectly OK here.
This commit is contained in:
Alan Modra
2025-05-10 12:17:23 +09:30
parent f7b623952a
commit 07cf922195
1 changed files with 1 additions and 1 deletions
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gas/dwarf2dbg.c
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@@ -1632,7 +1632,7 @@ size_inc_line_addr (int line_delta, addressT addr_delta)
}
/* Bias the line delta by the base. */
tmp = line_delta - DWARF2_LINE_BASE;
tmp = (unsigned) line_delta - DWARF2_LINE_BASE;
/* If the line increment is out of range of a special opcode, we
must encode it with DW_LNS_advance_line. */