97bf048c04
In this PR we have two return paths from a function "map". The common code sets <result> to the value returned by one path, while the other path does: <retval> = map (&<retval>, ...); We treated this call as tail recursion, losing the copy semantics on the value returned by the recursive call. We'd correctly reject the same thing for variables: local = map (&local, ...); The problem is that RESULT_DECLs didn't get the same treatment. 2019-08-09 Richard Sandiford <richard.sandiford@arm.com> gcc/ PR middle-end/90313 * tree-tailcall.c (find_tail_calls): Reject calls that might read from an escaped RESULT_DECL. gcc/testsuite/ PR middle-end/90313 * g++.dg/torture/pr90313.cc: New test. From-SVN: r274234 |
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| config | ||
| contrib | ||
| fixincludes | ||
| gcc | ||
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| include | ||
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| libiberty | ||
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