https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117846
Bug ID: 117846
Summary: [15 Regression] go-encode-id.cc:176:48: error: ‘%02x’
directive output may be truncated writing between 2
and 8 bytes into a region of size 6
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
When Go is enabled, r15-5775-g5a6af707f0af0a gave me:
/export/gnu/import/git/sources/gcc/gcc/go/gofrontend/go-encode-id.cc: In
function ‘std::string go_encode_id(const std::string&)’:
/export/gnu/import/git/sources/gcc/gcc/go/gofrontend/go-encode-id.cc:176:48:
error: ‘%02x’ directive output may be truncated writing between 2 and 8 bytes
into a region of size 6 [-Werror=format-truncation=]
176 | snprintf(buf, sizeof buf, "_x%02x", c);
| ^~~~
/export/gnu/import/git/sources/gcc/gcc/go/gofrontend/go-encode-id.cc:176:45:
note: directive argument in the range [128, 4294967295]
176 | snprintf(buf, sizeof buf, "_x%02x", c);
| ^~~~~~~~
/export/gnu/import/git/sources/gcc/gcc/go/gofrontend/go-encode-id.cc:176:27:
note: ‘snprintf’ output between 5 and 11 bytes into a destination of size 8
176 | snprintf(buf, sizeof buf, "_x%02x", c);
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
