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c9d70946b3
Bug 93577, apparently a regression (although it isn't very clear to me exactly when it was introduced; tests I made with various past compilers produced inconclusive results, including e.g. ICEs appearing with 64-bit-host compilers for some versions but not 32-bit-host compilers for the same versions) is an C front-end tree-checking ICE processing initializers for structs using the VLA-in-struct extension. There is an error for such initializers, but other processing that still takes place for them results in the ICE. This patch ensures that processing of initializers for variable-size types stops earlier to avoid the code that results in the ICE (and ensures it stops earlier for error_mark_node to avoid ICEs in the check for variable-size types), adjusts the conditions for the "empty scalar initializer" diagnostic to avoid consequent excess errors in the case of a bad type name, and adds tests for a few variations on what such initializers might look like, as well as tests for cases identified from ICEs seen with an earlier version of this patch. Bootstrapped with no regressions for x86_64-pc-linux-gnu. PR c/93577 gcc/c: * c-typeck.c (pop_init_level): Do not diagnose initializers as empty when initialized type is error_mark_node. (set_designator, process_init_element): Ignore initializers for elements of a variable-size type or of error_mark_node. gcc/testsuite: * gcc.dg/pr93577-1.c, gcc.dg/pr93577-2.c, gcc.dg/pr93577-3.c, gcc.dg/pr93577-4.c, gcc.dg/pr93577-5.c, gcc.dg/pr93577-6.c: New tests. * gcc.dg/vla-init-1.c: Expect fewer errors about VLA initializer.
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