Compiling with -O3 triggers the following warnings with GCC 9.1:
task.c: In function ‘isc__taskmgr_create’:
task.c:1456:44: warning: ‘%04u’ directive output may be truncated writing between 4 and 10 bytes into a region of size 6 [-Wformat-truncation=]
1456 | snprintf(name, sizeof(name), "isc-worker%04u", i);
| ^~~~
task.c:1456:33: note: directive argument in the range [0, 4294967294]
1456 | snprintf(name, sizeof(name), "isc-worker%04u", i);
| ^~~~~~~~~~~~~~~~
task.c:1456:4: note: ‘snprintf’ output between 15 and 21 bytes into a destination of size 16
1456 | snprintf(name, sizeof(name), "isc-worker%04u", i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
rrl.c: In function ‘debit_rrl_entry’:
rrl.c:602:35: error: ‘%d’ directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Werror=format-truncation=]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~
rrl.c:602:30: note: directive argument in the range [0, 2147483647]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~
rrl.c:602:3: note: ‘snprintf’ output between 6 and 15 bytes into a destination of size 13
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
rrl.c:602:35: error: ‘%d’ directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Werror=format-truncation=]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~
rrl.c:602:30: note: directive argument in the range [0, 2147483647]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~
rrl.c:602:3: note: ‘snprintf’ output between 6 and 15 bytes into a destination of size 13
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
rrl.c:602:35: error: ‘%d’ directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Werror=format-truncation=]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~
rrl.c:602:30: note: directive argument in the range [0, 2147483647]
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~
rrl.c:602:3: note: ‘snprintf’ output between 6 and 15 bytes into a destination of size 13
602 | snprintf(buf, sizeof(buf), "age=%d", age);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
private_test.c: In function ‘private_nsec3_totext_test’:
private_test.c:114:9: warning: array subscript 4 is outside array bounds of ‘uint32_t[1]’ {aka ‘unsigned int[1]’} [-Warray-bounds]
114 | while (*sp == '\0' && slen > 0) {
| ^~~
private_test.c:107:11: note: while referencing ‘salt’
107 | uint32_t salt;
| ^~~~
Prevent these warnings from being triggered by increasing the size of
the relevant arrays (task.c, rrl.c) and reordering conditions
(private_test.c).
(cherry picked from commit ce796ac1f4)
eeec8e8d83