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[Bug c/27893] New: [4.0/4.1/4.2 Regression] ICE with TREE_CONSTANT VLA sizes inside functions


int a;
void f(void) { int b[(__SIZE_TYPE__)&a]; }

yields

t.c: In function 'f':
t.c:2: internal compiler error: in tree_low_cst, at tree.c:4413
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Likewise if the size is 1/0.  Related to but not the same as bug 25161 and bug
27020 (both involve VLAs with TREE_CONSTANT array sizes, but in this case the
code is valid).


-- 
           Summary: [4.0/4.1/4.2 Regression] ICE with TREE_CONSTANT VLA
                    sizes inside functions
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jsm28 at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27893


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