b0832fe1f3
* tree.h (expand_expr_stmt_value): Add maybe_last argument. * c-common.h (genrtl_expr_stmt_value): Likewise. * stmt.c (expand_expr_stmt): Pass 1 as maybe_last. (expand_expr_stmt_value): Add maybe_last argument. Don't warn about statement with no effect if it is the last statement in expression statement. * c-semantics.c (genrtl_expr_stmt): Pass 1 as maybe_last. (genrtl_expr_stmt_value): Add maybe_last argument, pass it down to expand_expr_stmt_value. (expand_stmt) [EXPR_STMT]: Pass 1 as maybe_last to genrtl_expr_stmt_value if t is the last EXPR_STMT in its scope. * expr.c (expand_expr) [LABELED_BLOCK_EXPR, LOOP_EXPR]: Pass 1 as maybe_last to expand_expr_stmt_value. * gcc.dg/20020104-1.c: New test. From-SVN: r48541
23 lines
593 B
C
23 lines
593 B
C
/* Test whether statement with no effect warnings are not given for last
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statements inside of statement expression. */
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/* { dg-do compile } */
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/* { dg-options "-O -Wall" } */
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void bar (char *p, char *q);
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int main()
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{
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char foo [32], *p;
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({
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void *s = (foo);
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__builtin_memset (s, '\0', sizeof (foo));
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s; /* { dg-warning "no effect" "statement with no effect warning" } */
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s; /* { dg-bogus "no effect" "bogus statement with no effect warning" } */
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});
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p = foo;
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p; /* { dg-warning "no effect" "statement with no effect warning" } */
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bar (foo, p);
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return 0;
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}
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