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From: Martin Sebor <msebor@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r11-8161] PR middle-end/86058 - TARGET_MEM_REF causing incorrect message for -Wmaybe-uninitialized warning Date: Tue, 13 Apr 2021 19:48:31 +0000 (GMT) [thread overview] Message-ID: <20210413194831.790EE3951CA4@sourceware.org> (raw) https://gcc.gnu.org/g:8084ab15a3e300e3b2c537e56e0f3a1b00778aec commit r11-8161-g8084ab15a3e300e3b2c537e56e0f3a1b00778aec Author: Martin Sebor <msebor@redhat.com> Date: Tue Apr 13 13:46:21 2021 -0600 PR middle-end/86058 - TARGET_MEM_REF causing incorrect message for -Wmaybe-uninitialized warning gcc/testsuite/ChangeLog: PR middle-end/86058 * gcc.dg/pr86058.c: New test. Diff: --- gcc/testsuite/gcc.dg/pr86058.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/gcc/testsuite/gcc.dg/pr86058.c b/gcc/testsuite/gcc.dg/pr86058.c new file mode 100644 index 00000000000..0b030b04acf --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr86058.c @@ -0,0 +1,18 @@ +/* PR middle-end/86058 - TARGET_MEM_REF causing incorrect message for + -Wmaybe-uninitialized warning + { dg-do compile } + { dg-options "-O2 -Wuninitialized -Wmaybe-uninitialized" } */ + +extern void foo (int *); + +void zip (int *out, int indx) +{ + int arr[10]; + + for (int i = 0; i < indx; ++i) + out[i] = arr[i] + 1; // { dg-warning "'arr\\\[i]' may be used uninitialized" "pr?????" { xfail *-*-* } } + // { dg-warning "'arr' may be used uninitialized" "actual" { target *-*-* } .-1 } + + foo (arr); + foo (out); +}
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