| /* PR middle-end/92936 - missing warning on a past-the-end store to a PHI |
| { dg-do compile } |
| { dg-options "-O2 -Wall -Wno-array-bounds" } */ |
| |
| typedef __SIZE_TYPE__ size_t; |
| |
| void* malloc (size_t); |
| void* memset (void*, int, size_t); |
| |
| extern char a3[3], a5[5], a9[9]; |
| |
| extern int cnd[]; |
| |
| void* f2 (void) |
| { |
| char *p0 = cnd[0] ? a3 : 0; |
| char *p1 = cnd[1] ? a5 : p0; |
| |
| return memset (p1, 0, 6); // { dg-warning "writing 6 bytes into a region of size 5" } |
| } |
| |
| void* f3 (void) |
| { |
| char *p0 = cnd[0] ? a3 : 0; |
| char *p1 = cnd[1] ? a5 : 0; |
| char *p2 = cnd[2] ? p0 : p1; |
| |
| return memset (p2, 0, 6); // { dg-warning "writing 6 bytes into a region of size 5" } |
| } |
| |
| void* f3_2 (void) |
| { |
| char *p0 = cnd[0] ? a3 : 0; |
| char *p1 = cnd[1] ? a5 : 0; |
| char *p2 = cnd[2] ? p1 : p0; |
| |
| return memset (p2, 0, 6); // { dg-warning "writing 6 bytes into a region of size 5" } |
| } |
| |
| void* f3_3 (void) |
| { |
| char *p0 = cnd[0] ? a5 : 0; |
| char *p1 = cnd[1] ? p0 : a5; |
| char *p2 = cnd[2] ? p1 : p0; |
| |
| return memset (p2, 0, 6); // { dg-warning "writing 6 bytes into a region of size 5" } |
| } |
| |
| void* f4 (void) |
| { |
| char *p0 = cnd[0] ? a3 : 0; |
| char *p1 = cnd[1] ? a5 : 0; |
| char *p2 = cnd[2] ? p0 : 0; |
| char *p3 = cnd[3] ? p1 : p2; |
| |
| return memset (p3, 0, 6); // { dg-warning "writing 6 bytes into a region of size 5" } |
| } |
| |
| void* f9 (void) |
| { |
| char *p0 = cnd[0] ? a5 : 0; |
| char *p1 = cnd[1] ? a5 + 1 : 0; |
| char *p2 = cnd[2] ? a5 + 2 : 0; |
| char *p3 = cnd[3] ? a5 + 3 : 0; |
| char *p4 = cnd[4] ? a5 + 4 : 0; |
| |
| char *p5 = cnd[5] ? p0 : p1; |
| char *p6 = cnd[6] ? p5 : p2; |
| char *p7 = cnd[7] ? p6 : p3; |
| char *p8 = cnd[8] ? p7 : p4; |
| char *p9 = cnd[9] ? p8 : p5; |
| |
| return memset (p9, 0, 6); // { dg-warning "writing 6 bytes into a region of size 5" } |
| } |