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VLA fix [1/3]: added testcase demonstrating VLA bug

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This commit is contained in:
Joe Soroka 2011-04-08 01:07:17 -07:00
parent 174d61a56e
commit cb2fa5eab9
1 changed files with 6 additions and 1 deletions
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7
tests/tcctest.c
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@ -2079,9 +2079,14 @@ void *bounds_checking_is_enabled()
void c99_vla_test(int size1, int size2) void c99_vla_test(int size1, int size2)
{ {
#if defined __i386__ || defined __x86_64__ #if defined __i386__ || defined __x86_64__
int tab1[size1 * size2][2], tab2[10][2]; int size = size1 * size2;
int tab1[size][2], tab2[10][2];
void *tab1_ptr, *tab2_ptr, *bad_ptr; void *tab1_ptr, *tab2_ptr, *bad_ptr;
/* "size" should have been 'captured' at tab1 declaration,
so modifying it should have no effect on VLA behaviour. */
size = size-1;
printf("Test C99 VLA 1 (sizeof): "); printf("Test C99 VLA 1 (sizeof): ");
printf("%s\n", (sizeof tab1 == size1 * size2 * 2 * sizeof(int)) ? "PASSED" : "FAILED"); printf("%s\n", (sizeof tab1 == size1 * size2 * 2 * sizeof(int)) ? "PASSED" : "FAILED");
tab1_ptr = tab1; tab1_ptr = tab1;