[Bug c/123718] New: Compiler aborts with stack-smashing after invalid inline asm operand escapes (‘%’ operand number missing/out of range).

aamadu.olander at gmail dot com gcc-bugzilla@gcc.gnu.org
Mon Jan 19 18:52:48 GMT 2026


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123718

            Bug ID: 123718
           Summary: Compiler aborts with stack-smashing after invalid
                    inline asm operand escapes (‘%’ operand number
                    missing/out of range).
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: aamadu.olander at gmail dot com
  Target Milestone: ---

Created attachment 63412
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63412&action=edit
The file contains the output of -freport-bug switch

I have generated a testcase using a fuzzer and here's the output when I run the
latest version of gcc to compile the c code.


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