Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/warn/Wstringop-truncation-2.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
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// PR tree-optimization/84468 - bogus -Wstringop-truncation despite // assignment after conditional strncpy // Compile with -g to verify the warning deals properly with debug // statements. // { dg-do compile } // { dg-options "-O2 -Wstringop-truncation -g" } extern "C" char* strncpy (char*, const char*, __SIZE_TYPE__); char d[3]; void g (); void fnowarn1 (const char *s) { // Update dummy but never actually use it so it's eliminated // but causes debugging statements to be emitted for each // modification. int dummy = 0; try { g (); strncpy (d, s, sizeof d); // { dg-bogus "\\\[-Wstringop-truncation]" } ++dummy; } catch (...) { ++dummy; d[0] = 0; } ++dummy; d[sizeof d - 1] = 0; } void fnowarn2 (const char *s) { int dummy = 0; try { g (); strncpy (d, s, sizeof d); ++dummy; } catch (...) { ++dummy; return; } ++dummy; d[sizeof d - 1] = 0; } void fnowarn3 (const char *s) { int dummy = 0; try { g (); strncpy (d, s, sizeof d); ++dummy; try { ++dummy; d[sizeof d - 1] = 0; g (); } catch (...) { ++dummy; } } catch (...) { ++dummy; return; } ++dummy; d[sizeof d - 1] = 0; } void fnowarn4 (const char *s) { int dummy = 0; try { g (); } catch (...) { strncpy (d, s, sizeof d); // { dg-bogus "\\\[-Wstringop-truncation]" "bug 84468" { xfail *-*-*} } ++dummy; } ++dummy; d[sizeof d - 1] = 0; } void fwarn1 (const char *s) { int dummy = 0; try { ++dummy; g (); ++dummy; strncpy (d, s, sizeof d); // { dg-warning "\\\[-Wstringop-truncation]" } ++dummy; } catch (...) { ++dummy; } ++dummy; } void fwarn2 (const char *s) { int dummy = 0; try { ++dummy; strncpy (d, s, sizeof d); // { dg-warning "\\\[-Wstringop-truncation]" } ++dummy; g (); ++dummy; } catch (...) { ++dummy; } ++dummy; } void fwarn3 (const char *s) { int dummy = 0; try { ++dummy; g (); ++dummy; strncpy (d, s, sizeof d); // { dg-warning "\\\[-Wstringop-truncation]" } ++dummy; } catch (...) { ++dummy; d[0] = 0; } ++dummy; }