Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/builtin-snprintf-warn-4.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | |
children |
line wrap: on
line source
/* PR c/83448 */ /* { dg-do compile } */ /* { dg-options "-O2 -Wformat-truncation -fdiagnostics-show-caret" } */ extern int snprintf (char *, __SIZE_TYPE__, const char *, ...); void foo (char *a, char *b, char *c, int d, int e) { snprintf (a, 7, "abc\\\123 efg"); /* { dg-warning "directive output truncated writing 9 bytes into a region of size 7" "" { target *-*-* } .-1 } { dg-message ".snprintf. output 10 bytes into a destination of size 7" "note" { target *-*-* } .-2 } { dg-begin-multiline-output "" } snprintf (a, 7, "abc\\\123 efg"); ~~~~~~~~~~~^~ { dg-end-multiline-output "" } { dg-begin-multiline-output "note" } snprintf (a, 7, "abc\\\123 efg"); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ { dg-end-multiline-output "" } */ d &= 63; d += 10; snprintf (b, 7, "a%dbcdefg", d); /* { dg-warning "'bcdefg' directive output truncated writing 6 bytes into a region of size 4" "" { target *-*-* } .-1 } { dg-message ".snprintf. output 10 bytes into a destination of size 7" "note" { target *-*-* } .-2 } { dg-begin-multiline-output "" } snprintf (b, 7, "a%dbcdefg", d); ~~~~^~ { dg-end-multiline-output "" } { dg-begin-multiline-output "note" } snprintf (b, 7, "a%dbcdefg", d); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ { dg-end-multiline-output "" } */ e &= 127; snprintf (c, 7, "a%dbcdefgh", e); /* { dg-warning "'bcdefgh' directive output truncated writing 7 bytes into a region of size between 3 and 5" "" { target *-*-* } .-1 } { dg-message ".snprintf. output between 10 and 12 bytes into a destination of size 7" "note" { target *-*-* } .-2 } { dg-begin-multiline-output "" } snprintf (c, 7, "a%dbcdefgh", e); ~~~~~^~ { dg-end-multiline-output "" } { dg-begin-multiline-output "note" } snprintf (c, 7, "a%dbcdefgh", e); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ { dg-end-multiline-output "" } */ }