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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/g++.dg/warn/Wconversion-pr34389.C | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/g++.dg/warn/Wconversion-pr34389.C')
-rw-r--r-- | gcc-4.9/gcc/testsuite/g++.dg/warn/Wconversion-pr34389.C | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/warn/Wconversion-pr34389.C b/gcc-4.9/gcc/testsuite/g++.dg/warn/Wconversion-pr34389.C new file mode 100644 index 000000000..43df8f902 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/g++.dg/warn/Wconversion-pr34389.C @@ -0,0 +1,54 @@ +/* PR 34389 */ +/* { dg-do compile } */ +/* { dg-options "-Wconversion -Wsign-conversion" } */ +/* { dg-require-effective-target int32plus } */ +short mask1(short x) +{ + short y = 0x7fff; + return x & y; /* { dg-bogus "conversion" "bogus warning" } */ +} + +short mask2(short ssx) +{ + short ssy; + short ssz; + + ssz = ((int)ssx) & 0x7fff; + ssy = ((int)ssx) | 0x7fff; + ssz = ((int)ssx) ^ 0x7fff; + return ssx & 0x7fff; +} + +short mask3(int si, unsigned int ui) +{ + short ss; + unsigned short us; + + ss = si & 0x7fff; + ss = si & 0xAAAA; /* { dg-warning "conversion" } */ + ss = ui & 0x7fff; + ss = ui & 0xAAAA; /* { dg-warning "conversion" } */ + + us = si & 0x7fff; + us = si & 0xAAAA; /* { dg-warning "conversion" } */ + us = ui & 0x7fff; + us = ui & 0xAAAA; /* 0xAAAA is zero-extended, thus it masks the + upper bits of 'ui' making it fit in 'us'. */ + + return ss; +} + +short mask4(int x, int y) +{ + return x & y; /* { dg-warning "conversion" } */ +} + +short mask5(int x) +{ + return x & -1; /* { dg-warning "conversion" } */ +} + +short mask6(short x) +{ + return x & -1; +} |