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/g++.dg/warn/sequence-pt-1.C | 109 ++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 gcc/testsuite/g++.dg/warn/sequence-pt-1.C (limited to 'gcc/testsuite/g++.dg/warn/sequence-pt-1.C') diff --git a/gcc/testsuite/g++.dg/warn/sequence-pt-1.C b/gcc/testsuite/g++.dg/warn/sequence-pt-1.C new file mode 100644 index 000000000..05eee82c1 --- /dev/null +++ b/gcc/testsuite/g++.dg/warn/sequence-pt-1.C @@ -0,0 +1,109 @@ +/* Test for sequence point warnings. */ +/* Origin: Michael Meeks in + , + adapted to a testcase by Joseph Myers . */ +/* { dg-do compile } */ +/* { dg-options "-Wsequence-point" } */ + +struct s +{ + int a; +}; + +extern int fn (int); +extern int fnb (int, int); +extern int fnc (int *); +extern int sprintf (char *, const char *, ...); + +typedef __SIZE_TYPE__ size_t; + +void +foo (int a, int b, int n, int p, int *ptr, struct s *sptr, + int *ap, int *bp, int **cp, char *ans, int (*fnp[8])(int)) +{ + int len; + + a = a++; /* { dg-warning "undefined" "sequence point warning" } */ + a = --a; /* { dg-warning "undefined" "sequence point warning" } */ + a = ++a + b; /* { dg-warning "undefined" "sequence point warning" } */ + a = a-- + b; /* { dg-warning "undefined" "sequence point warning" } */ + ap[n] = bp[n++]; /* { dg-warning "undefined" "sequence point warning" } */ + ap[--n] = bp[n]; /* { dg-warning "undefined" "sequence point warning" } */ + ap[++n] = bp[--n]; /* { dg-warning "undefined" "sequence point warning" } */ + cp[n][n] = cp[n][n]++; /* { dg-warning "undefined" "sequence point warning" } */ + cp[n][p] = cp[n][n++]; /* { dg-warning "undefined" "sequence point warning" } */ + *ptr++ = (size_t)ptr++; /* { dg-warning "undefined" "sequence point warning" } */ + sptr->a = sptr->a++; /* { dg-warning "undefined" "sequence point warning" } */ + sptr->a = (size_t)(sptr++); /* { dg-warning "undefined" "sequence point warning" } */ + *ptr++ = fn (*ptr); /* { dg-warning "undefined" "sequence point warning" } */ + a = b = a++; /* { dg-warning "undefined" "sequence point warning" } */ + b = a = --b; /* { dg-warning "undefined" "sequence point warning" } */ + a = 1 + (a = 1); /* { dg-warning "undefined" "sequence point warning" } */ + a = (a = b); /* { dg-warning "undefined" "sequence point warning" } */ + a = (a = b) + 1; /* { dg-warning "undefined" "sequence point warning" } */ + a = (bp[a++] = b) + 1; /* { dg-warning "undefined" "sequence point warning" } */ + a = b++ * b++; /* { dg-warning "undefined" "sequence point warning" } */ + a = fnb (b++, b++); /* { dg-warning "undefined" "sequence point warning" } */ + a = (*fnp[b++]) (b++); /* { dg-warning "undefined" "sequence point warning" } */ + a = (*fnp[b]) (b++); /* { dg-warning "undefined" "sequence point warning" } */ + a = (*fnp[b++]) (b); /* { dg-warning "undefined" "sequence point warning" } */ + *ap = fnc (ap++); /* { dg-warning "undefined" "sequence point warning" } */ + (a += b) + (a += n); /* { dg-warning "undefined" "sequence point warning" } */ + a = (b, b++) + (b++, b); /* { dg-warning "undefined" "sequence point warning" } */ + ap[a++] += a; /* { dg-warning "undefined" "sequence point warning" } */ + ap[a+=1] += a; /* { dg-warning "undefined" "sequence point warning" } */ + ap[a++] += a++; /* { dg-warning "undefined" "sequence point warning" } */ + ap[a+=1] += a++; /* { dg-warning "undefined" "sequence point warning" } */ + a = a++, b = a; /* { dg-warning "undefined" "sequence point warning" } */ + b = a, a = a++; /* { dg-warning "undefined" "sequence point warning" } */ + a = (b++ ? n : a) + b; /* { dg-warning "undefined" "sequence point warning" } */ + b ? a = a++ : a; /* { dg-warning "undefined" "sequence point warning" } */ + b && (a = a++); /* { dg-warning "undefined" "sequence point warning" } */ + (a = a++) && b; /* { dg-warning "undefined" "sequence point warning" } */ + b, (a = a++); /* { dg-warning "undefined" "sequence point warning" } */ + (a = a++), b; /* { dg-warning "undefined" "sequence point warning" } */ + a ^= b ^= a ^= b; /* { dg-warning "undefined" "sequence point warning" } */ + + a = a; /* { dg-bogus "undefined" "bogus sequence point warning" } */ + a = (a++ && 4); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + a = ! (a++ && 4); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + a = - (a++ && 4); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + a = (double) (a++ && 4); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + len = sprintf (ans, "%d", len++); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + a = fn (a++); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + b++, (b + b); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + (a = b++), (a = b++); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + a = (b++, b++); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + a = b++ && b++; /* { dg-bogus "undefined" "bogus sequence point warning" } */ + a = b++ || b++; /* { dg-bogus "undefined" "bogus sequence point warning" } */ + a = (b++ ? b++ : a); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + a = (b++ ? a : b++); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + ap[a++] += bp[b]; /* { dg-bogus "undefined" "bogus sequence point warning" } */ + ap[a += 1] += 1; /* { dg-bogus "undefined" "bogus sequence point warning" } */ + *ptr < 128 ? *ptr++ : *(ptr += 2); /* { dg-bogus "undefined" "bogus sequence point warning" } */ + + /* The following will be represented internally with a tree consisting of + many duplicated SAVE_EXPRs. This caused the previous version of the + sequence point warning code to fail by running out of virtual memory. */ + a = ((b & 1 ? 21 : 0) + | (b & 2 ? 22 : 0) + | (b & 3 ? 23 : 0) + | (b & 4 ? 24 : 0) + | (b & 5 ? 25 : 0) + | (b & 6 ? 26 : 0) + | (b & 7 ? 27 : 0) + | (b & 8 ? 28 : 0) + | (b & 9 ? 29 : 0) + | (b & 10 ? 30 : 0) + | (b & 11 ? 31 : 0) + | (b & 12 ? 32 : 0) + | (b & 13 ? 1 : 0) + | (b & 14 ? 2 : 0) + | (b & 15 ? 3 : 0) + | (b & 16 ? 4 : 0) + | (b & 17 ? 5 : 0) + | (b & 18 ? 6 : 0) + | (b & 19 ? 7 : 0) + | (b & 20 ? 8 : 0) + | (b & 21 ? 9 : 0)); +} -- cgit v1.2.3