diff options
Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/builtin-snprintf-warn-4.c')
-rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/builtin-snprintf-warn-4.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/builtin-snprintf-warn-4.c b/gcc/testsuite/gcc.dg/tree-ssa/builtin-snprintf-warn-4.c new file mode 100644 index 00000000000..e6abf24c672 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/builtin-snprintf-warn-4.c @@ -0,0 +1,46 @@ +/* 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 "" } */ +} |