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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.c-torture/compile/981006-1.c | |
| download | cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2 cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz | |
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Diffstat (limited to 'gcc/testsuite/gcc.c-torture/compile/981006-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/981006-1.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/compile/981006-1.c b/gcc/testsuite/gcc.c-torture/compile/981006-1.c new file mode 100644 index 000000000..d77c115f2 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/981006-1.c @@ -0,0 +1,53 @@ +/* Test that tablejump insns are correctly handled. If the compiler + loses track of the jump targets, it will report that x and y can be + used uninitialized. + + This is broken in egcs 1998/10/06 for mips in pic mode. */ +/* { dg-do assemble } */ +/* For MIPS at least, pic is needed to trigger the problem. */ +/* { dg-options "-w -Wuninitialized -Werror -fpic" } */ +/* { dg-options "-w -Wuninitialized -Werror" { target { { rs6000-*-aix* powerpc*-*-aix* arm*-*-* fr30-*-* sh-*-hms h8300*-*-* cris-*-elf* mmix-*-* } || { ! fpic } } } } */ + +int foo (int a, int b) +{ + __label__ z; + int x; /* { dg-bogus "warning: `.' might be used uninitialized in this function" } */ + int y; /* { dg-bogus "warning: `.' might be used uninitialized in this function" } */ + static void *p; + + switch (a) { + case 2: + x = 4; + break; + case 4: + x = 6; + break; + case 8: case 10: case 13: case 11: case 17: case 19: + x = 7; + break; + default: + x = -1; + break; + } + switch (b) { + case 2: + y = 4; + break; + case 4: + y = 6; + break; + case 8: case 10: case 13: case 11: case 17: case 19: + y = 7; + break; + default: + y = -1; + break; + } + z: + p = &&z; + return x * y; +} +int main (int argc, char *argv[]) +{ + return 1 == foo (argc, argc + 1); +} |