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| author | Nathan Sidwell <nathan@acm.org> | 2018-02-09 19:31:10 +0000 |
|---|---|---|
| committer | Nathan Sidwell <nathan@gcc.gnu.org> | 2018-02-09 19:31:10 +0000 |
| commit | 0444aa9c0a3357707624263ec2fd13d8f156016e (patch) | |
| tree | dfe37130c665a88b85c0d08c740c2ba447b3cedc /gcc/c | |
| parent | dd2799cc2212a72a1b31828918f9bb9287ab9780 (diff) | |
| download | gcc-0444aa9c0a3357707624263ec2fd13d8f156016e.zip gcc-0444aa9c0a3357707624263ec2fd13d8f156016e.tar.gz gcc-0444aa9c0a3357707624263ec2fd13d8f156016e.tar.bz2 | |
[PR c/84293] Unexpected strict-alias warning
https://gcc.gnu.org/ml/gcc-patches/2018-02/msg00510.html
PR c/84293
gcc/c/
* c-typeck.c (build_indirect_ref, build_c_cast): Pass expr location
to strict_aliasing_warning.
gcc/c-family/
* c-common.h (strict_aliasing_warning): Drop OTYPE arg, insert LOC
arg.
* c-warn.c (strict_aliasing_warning): Drop OTYPE arg, require LOC
arg. Adjust.
gcc/cp/
* typeck.c (cp_build_indirect_ref_1, build_reinterpret_cast_1):
Pass expr location to strict_aliasing_warning.
gcc/testsuite/
* c-c++-common/pr84293.h: New.
* c-c++-common/pr84293.c: New.
From-SVN: r257539
Diffstat (limited to 'gcc/c')
| -rw-r--r-- | gcc/c/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/c/c-typeck.c | 4 |
2 files changed, 8 insertions, 2 deletions
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog index 97ae43c..bca7268 100644 --- a/gcc/c/ChangeLog +++ b/gcc/c/ChangeLog @@ -1,3 +1,9 @@ +2018-02-09 Nathan Sidwell <nathan@acm.org> + + PR c/84293 + * c-typeck.c (build_indirect_ref, build_c_cast): Pass expr location + to strict_aliasing_warning. + 2018-02-02 Paolo Carlini <paolo.carlini@oracle.com> * c-typeck.c (really_start_incremental_init, push_init_level, diff --git a/gcc/c/c-typeck.c b/gcc/c/c-typeck.c index b35c2c0..1eae4ea 100644 --- a/gcc/c/c-typeck.c +++ b/gcc/c/c-typeck.c @@ -2524,7 +2524,7 @@ build_indirect_ref (location_t loc, tree ptr, ref_operator errstring) the backend. This only needs to be done at warn_strict_aliasing > 2. */ if (warn_strict_aliasing > 2) - if (strict_aliasing_warning (TREE_TYPE (TREE_OPERAND (pointer, 0)), + if (strict_aliasing_warning (EXPR_LOCATION (pointer), type, TREE_OPERAND (pointer, 0))) TREE_NO_WARNING (pointer) = 1; } @@ -5696,7 +5696,7 @@ build_c_cast (location_t loc, tree type, tree expr) "of different size"); if (warn_strict_aliasing <= 2) - strict_aliasing_warning (otype, type, expr); + strict_aliasing_warning (EXPR_LOCATION (value), type, expr); /* If pedantic, warn for conversions between function and object pointer types, except for converting a null pointer constant |