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[Bug fortran/66528] [6 Regression] unbalanced IF/ENDIF with -fmax-errors=1 causes invalid free


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66528

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |5.1.0
           Keywords|                            |error-recovery
   Last reconfirmed|                            |2015-06-13
                 CC|                            |pault at gcc dot gnu.org
     Ever confirmed|0                           |1
            Summary|unbalanced IF/ENDIF with    |[6 Regression] unbalanced
                   |-fmax-errors=1 causes       |IF/ENDIF with
                   |invalid free                |-fmax-errors=1 causes
                   |                            |invalid free
      Known to fail|                            |6.0

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Much better with a test case, of course.

Indeed!-) Revision r223447 (2015-05-20) gives

Error: END IF statement expected at (1)
compilation terminated due to -fmax-errors=1.

Revision r223694 (2015-05-26) gives

compilation terminated due to -fmax-errors=1.
f951(2326,0x7fff7bef0300) malloc: *** error for object 0x1412fd9a8: pointer
being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
(null):0: confused by earlier errors, bailing out
f951(2326,0x7fff7bef0300) malloc: *** error for object 0x142002200: pointer
being freed was not allocated
*** set a breakpoint in malloc_error_break to debug

Usual suspect r223677 (pr66082).


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