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| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | locale/weightwc.h | 15 |
2 files changed, 20 insertions, 0 deletions
@@ -1,3 +1,8 @@ +2018-02-27 Joseph Myers <joseph@codesourcery.com> + + * locale/weightwc.h (findidx): Ignore -Wmaybe-uninitialized for + -Os in two more places. + 2018-02-27 Mike FABIAN <mfabian@redhat.com> See this bug https://sourceware.org/bugzilla/show_bug.cgi?id=22898 diff --git a/locale/weightwc.h b/locale/weightwc.h index ac25ba9..36c65b5 100644 --- a/locale/weightwc.h +++ b/locale/weightwc.h @@ -28,7 +28,15 @@ findidx (const int32_t *table, const wint_t *extra, const wint_t **cpp, size_t len) { + /* With GCC 7 when compiling with -Os the compiler warns that + seq1.back_us and seq2.back_us, which become *cpp, might be used + uninitialized. This is impossible as this function cannot be + called except in cases where those fields have been + initialized. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_Os_NEEDS_COMMENT (7, "-Wmaybe-uninitialized"); wint_t ch = *(*cpp)++; + DIAG_POP_NEEDS_COMMENT; int32_t i = __collidx_table_lookup ((const char *) table, ch); if (i >= 0) @@ -107,11 +115,18 @@ findidx (const int32_t *table, continue; } + /* With GCC 7 when compiling with -Os the compiler warns + that seq1.back_us and seq2.back_us, which become usrc, + might be used uninitialized. This is impossible for the + same reason as described above. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_Os_NEEDS_COMMENT (7, "-Wmaybe-uninitialized"); if (cp[nhere - 1] > usrc[nhere -1]) { cp += 2 * nhere; continue; } + DIAG_POP_NEEDS_COMMENT; if (cp[2 * nhere - 1] < usrc[nhere -1]) { |