https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88835
Bug ID: 88835
Summary: [9 Regression] Maybe misleading
-Werror=format-overflow since r265648
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: msebor at gcc dot gnu.org
Target Milestone: ---
Host: i586-linux-gnu
Created attachment 45424
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45424&action=edit
test-case
I originally reported that to elfutils bugzilla.
The warning looks as follows:
$ gcc -m32 /tmp/readelf.i -c -O2 -Werror=format-overflow
readelf.c: In function ‘print_debug_str_section’:
readelf.c:10152:15: error: ‘%*llx’ directive output between 4 and 2147483647
bytes may cause result to exceed ‘INT_MAX’ [-Werror=format-overflow=]
10152 | printf (" [%*" PRIx64 "] \"%s\"\n", digits, (uint64_t) offset,
str);
| ^~~~~~
readelf.c:10152:15: note: directive argument in the range [0,
18446744073709551614]
