From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.c-torture/execute/pr45034.c | 45 +++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 gcc/testsuite/gcc.c-torture/execute/pr45034.c (limited to 'gcc/testsuite/gcc.c-torture/execute/pr45034.c') diff --git a/gcc/testsuite/gcc.c-torture/execute/pr45034.c b/gcc/testsuite/gcc.c-torture/execute/pr45034.c new file mode 100644 index 000000000..2d86f309c --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr45034.c @@ -0,0 +1,45 @@ +extern void abort (void); +static void fixnum_neg(signed char x, signed char *py, int *pv) +{ + unsigned char ux, uy; + + ux = (unsigned char)x; + uy = -ux; + *py = (uy <= 127) ? (signed char)uy : (-(signed char)(255 - uy) - 1); + *pv = (x == -128) ? 1 : 0; +} + +void __attribute__((noinline)) foo(int x, int y, int v) +{ + if (y < -128 || y > 127) + abort(); +} + +int test_neg(void) +{ + signed char x, y; + int v, err; + + err = 0; + x = -128; + for (;;) { + fixnum_neg(x, &y, &v); + foo((int)x, (int)y, v); + if ((v && x != -128) || (!v && x == -128)) + ++err; + if (x == 127) + break; + ++x; + } + return err; +} + +int main(void) +{ + if (sizeof (char) != 1) + return 0; + if (test_neg() != 0) + abort(); + return 0; +} + -- cgit v1.2.3